put the verbs in brackets in the correct tense :
1. john (write)________his report last month
2. guillermo (not/call)_________his employer yesterday
3. what you (do)_______last weekend?
4. Mr. and Mrs. Ba (take)__________some beautiful photos a few days ago.
5. I knew sarah was very busy , so I ( not disturb)_______her.
6. Emily (date)__________a very good-looking guy last saturday
7. We (watch)___________an interesting program on television last night
8. Jim and Lily (more)____________to London in 2006
9. Catherine ( invite )________her boyfriend's parents for dinner last sunday
10. I ( have)____________a little trouble with my car last week
I/ put the verbs in brackets in the correct tense :
1. she (hold)______________her birthday party every year.
2. they sometimes (go)__________to school on sundays.
3. trees (grow)____________more quickly in summer than in winter.
4. We usually (get up)_________at about 7:00 couldn't you come an hour later?
5. water (boil)_________at 100 degree celsius and (freeze)___________at 0 degree celsius
6. the sea (cover)__________two thirds of the world.
7. loud music (give)__________me a headache
8._____________he (live)__________in Manchester? No, he lives in newcastle.
9. She (work)____________from Mondays to Fridays . She (not/work)__________at weekend
10. She never (help)___________me with that!
1/Đốt cháy hoàn toàn 4,5 gam chất hữu cơ A thu đc 6,6g \(CO_2\) và 2,7g nước . Xác định công thức phân tử của A , bt tỉ khối hơi của A so với khí hiđro là 30
2/ Cho 3,2g CuO vào 200g dd Axit axetic 10%
a) Tính khối lượng muối tạo ra
b) Tính a?
c) Tính C% dd muối sinh ra ?
Bài 1 : giải hệ phương trình
a.\(\left\{{}\begin{matrix}x-3y=11\\2x+y=1\end{matrix}\right.\)
b.\(\left\{{}\begin{matrix}3x-2y=7\\5x-3y=3\end{matrix}\right.\)
c.\(\left\{{}\begin{matrix}x+2y=1\\2x+y=2\end{matrix}\right.\)
Bài 2 : Giải phương trình
a.\(2x^2+3x-5=0\) b.\(x^2-2x-7=0\)
c.\(x^2-4x-3=0\) d.\(x^2-4x+2=0\)
Bài 3 : giải phương trình trùng phương
a.\(x^4-4x^2-5=0\) b.\(2x^4-7x^2-4=0\)
c.\(x^4-7x^2-18=0\) d.\(4x^4+x^2-5=0\)
GIÚP MÌNH VỚI Ạ !!!!!!!!!
I/
turn on |
turn off |
look for | look after | look up |
put on |
take off |
see off | go on | keep in touch |
1. You can....................the word in the dictionary to know its meaning.
2. Please...................the lights and fans if you are the last to leave.
3. Tomorrow they'll go to the airport to..............their friend...........
4.It was very cold outside, so he.................his coat
5. A nurse is the person who...................the patients
6. What are you ................under the bed ? - My comic
7. It's so hot . How about .........................the air conditioner?
8. We live apart, but we still......................each other
9. Our class will.....................planting trees to get more shade for everyone.
10....................Your shoes before going into the house.
II/
1. I wore a hat . I didn't want to get sick
-->.................................................(because)
-->..................................................(so)
-->..................................................(therefore)
2. The film is great . It has an all-star cast.
-->..............................................(moreover)
--> ..............................................(and)
3. We really want to join them. We are so busy working now.
-->............................................................(but)
-->.......................................................(however)
4. Do you learn English at school? Do you learn French at school?
-->..................................................................................(or)