Complete  the sentence with correct form of the word given 

1. If I had a type writer, I (type)                if my self.

2.If  I ( know)    ................his telephone number ,I'd give it to you.

3.I   shouldn't  have believed it if I (  not see)...........it with  my own  eyes.

4. If you (arrive)............ ten minutes  ealier, you would have got  a seat 

5. I (not buy).............that coat if I (be)...........you.

6.If she had asked  you, you (accept).........................

7.He missed an exciting football match on TV last night .He wishes he (watch)......................it

8. Ken got to the  station in time  to catch his train .

If he (miss)...........it,he (be).............. late for his  interview.

9.I  wish  she  (come)......................to see me yesterday.

10.I must hurry      .My friend will be annoyed if I (not be)........on time 

Mark the letter  A,B,C or D on your answer sheet to indicate the correct anser to each the following questions

1.I.........Jenny when I was going to the market.

A.  saw             B.was seeing          C.see           D.wereseeing

2.Why......... me last night?

A.weren't you calling         B.you called           C.didn't you call D.don't you call

3.The sun...............and the sky is blue.

A.is shining           B.were shining        C.shone        D.shines

4.What...........................at me like that for?

A.do you look            B.look         C.are you looking                  D.were you looking

5.By 8 o'clock yesterday,the spaceship ..............20 hous around the earth.

A.will  travel           B.has beentraveling         

C.had been traveling         D.will have been traveling

6. the manager, as well as his assistants             yet.

A.haven't arrived            B.hadn't arrived        C.hasn't arrived 

D.arrive

7.When my parents ............for a visit tomorrow, they will see our new baby for the first time.

A. will arrive      B. arrived          C.will have arrived      D.arrive

8.When fergi saw the snake at her feet , she

A.was screaming           B.had screamed        C. screamed

D.screams

9.by the time Tionel finally graduated from high school, he..................seven.

A.attended        B. was attending      C.had attended

D.hadbeen attending

10.by the end of next month ,Annabel and I.

A. will have gone      B. will go         C. have beeb going

D.will be going

11.That pipe  .....................for ages, we  mustget  it mennded.

A. has been leaking           B.is leaking           C.leaks 

D.had been leaking

Cirle the best option to complete each sentence

1. It  was difficult ..................a date which was convenient for everyone.

A.making              B.to make           C.make         D. made

2.Charlie chaplin films often ...........me

A.makes/laugh            B.make/laughing           C.make/laugh

D.makes/laughing

3.I think your house really needs...............

A.for repainting        B.to repaint             C.being repainted

D.to be repained

4.Would  you please  show me............yahoo  messenger?

A.  to use     B.using        C.how can I use         D.how to use

5.I enjoy...........places I'venever been  to before

A. to visit          B.visiting       C.visit        D.With visiting

6.Peter now  rides his bike  to work  in stead of ............by bus

A.travel          B.travels          C.travelling          D.to travel

7.Let him.............it himself 

A. do          B. to do          C. does         doing    

1.My brother (use)..........this computer in 2 hours so now can        ( take).......it away

2.Before you (more)........here ,they (live)...........in this street for a long time.

3.Since M.r Green (leave).........London in1997,he (teach)........ French.

4.She (not speak)..........to me since we (quarrel)........last week  5.How long Hoa(work).........in this factory? Up to now , Hoa (be).........very hard.

6.At this time next week these studebts (study).........here after they (finish)........... their work.

7.When we came to the stadium , the match (already/start).....................

8.Mary people (more)...............to the  new place before the storm occurred.

9. I (sit)........downant (rest).............after they (leave)..........my office but now I can't.

10. He started.......................(play)golf last year.

11. I'd like.................(continue)................(study) ,but I haven't got enoug.

12. She finished ......................(write)the book but then she decided.  

Rewrite the sentence in such  a way that in has the same meaning as the one before it :

1. You can't visit the United States so you don't get a visa 

If ..............................................................................

2. We didn't go on holiday because we didn't have enough money

If ........................................................................................

3.Elizabeth got a bad cold because she started smoking cigarettes 

If Elizabeth.........................................................................

4. he did'nt phone me immediately so he didn't get any information

If he................................................................................

5. Mr. Will lost his job because he was late every day

If Mr.Will.......................................................................

6. It  is so cold that we can't  go out 

If .................................................................

7.he doesn't hurry, so he misses the train

If .................................................................

8.Sussan felt sick because she ate 4 cream cakes

If .......................................................................

3. Có bao nhiêu giá trị nguyên của tham số m để hàm số \(y=\dfrac{x+1}{x+3m}\) nghịch biến trên khoảng(6;+\(\infty\) )?

4. Có bao nhiêu giá trị nguyên của tham số m để hàm số \(y=\dfrac{x+2}{x+3m}\) đồng biến trên khoảng (-\(\infty\);-6)?

Gọi tên  các este sau:  HCOOCH₃; HCOOC₂H₅; CH₃COOCH₃;CH₃COOC₂H₅;C₂H₅COOCH;C₂H₅COOC₂H₅;CH₂=CHCOOCH₂;CH₂=CHOOC₂H₅;CH₃COOCH=CH₂;C₂H₅COOCH=CH₂;

1. Một gen nhân đôi 4 lần đã cần môi trường cung cấp 9000 nucleotit loại A và 13500 nucleotit loại X. Hãy xác định tổng số liên kết hiđro của  gen.

2.Trên một mạch của phân tử ADN  có số nucleotit các loại: A =80;  G =160; X = 90; T =40.Hai lần nhân đôi của phân tử ADN  đòi hỏi môi trường nội bào cung cấp cho từng loại nucleotit   của gen  là bao nhiêu ? 

1. Một gen nhân đôi một số đợt đã lấy của môi trường 21000 nu.Trong đó loại A chiếm 4200 nu. Biết tổng số mạch đơn con được tạo thành gấp 8 lần số mạch đơn của gen mẹ ban đầu.

a.Tính số lần nhân đôi.

b.Tính số nu từng loại của gen.

GIẢI CHI TIẾT GIÚP EM. EM CẢM ƠN NHÌU

1. the last time mary rang you was an hour ago.

-Mary

2.I have tasted such a delicious cake in the bakery for two hours.

-when

BÀI 2: Mạch 1 có A₁=10%, T₁=30%, G₁=20% và bằng 2400 nu. Tính số nu từng loại trên từng mạch của gen