Fill in prepositions of time “in/on/at” as in the example

1. ......................... 9 o’clock

2. ......................... autumn

3. ......................... July

4. ......................... Christmas

5. ......................... haft past two

6. ......................... 1984

7. ......................... September 28^th

8. ......................... Monday morning

9. ......................... March 25^th

10. ......................... Easter

11. ......................... Firday

12. ......................... the morning

13. ......................... a quarter past six

14. ......................... midnight

Rewrite

1. Somebody has cleaned the room

=> The room ..........................................................................

2. Bill is using the computer at the moment

=> The computer ..........................................................................

3. Somebody was recording our conversations

=> Our conversations ..........................................................................

4. The poloce will tow away cars left here

=> Cars ..........................................................................

5. The have postponed the concert

=>The concert ..........................................................................

6. The are going to build a new supermarket next year

=> A new supermarket ..........................................................................

7. Has your father repaired the car?

=> Has the car ..........................................................................

8. People advised us not to go out alone

=> We ..........................................................................

9. My friend can answer the question

=> The question ..........................................................................

10. My mother wrote that letter

=> That letter ..........................................................................

Write full sentences

1. She/ study/ this languague/ 3 years

=> ..........................................................................

2. brother/ teach/ this school/ since/ graduate/ college

=> ..........................................................................

3. We/ not/ see/ him/ for 5 years

=> ..........................................................................

4. I/ not/ see/ my parents/ for/ 5 months

=> ..........................................................................

5. He/ live/ small house/ near the coast/ since 1989

=> ..........................................................................

Rewrite

1. I haven’t seen him for two weeks

=> It’s ...........................................................................

2. We began to know her 2 years ago

=> We have ...........................................................................

3. She started making cakes in that shop last week

=> She has ...........................................................................

4. I have never sat on this row before

=> This is the first ...........................................................................

5.John has not cut the grass for over six months

=> It’s ...........................................................................

6. She started working as a secretary fivre years ago

=> She has ..........................................................................

7. She has slept for two hours

=> She started ..........................................................................

8. I started working for the company a year ago

=> I have ..........................................................................

9. It started to rain at 5 o’clock

=> It ..........................................................................

10. I started learning English in 2004

=> I have ..........................................................................

Giúp mình bài này với:

Cho (a^2 + b^2) / (c^2 + d^2) = (a x b) / (c x d)    với a, b, c, d khác 0; c khác d và -d.

Chứng minh rằng hoặc  a/b = c/d  hoặc  a/b = d/c.

Ai trả lời đúng mình sẽ k.

Supply the correct verb form: Simple past or present perfect

1. ..........................  you ..........................  (do) the homework yet?

2. Lan ..........................  (see) this film three times

3. We ..........................  (wait) you since two o'clock

4. We (not go) ..........................  to the cinema last week 

5. Mrs.Loan (teach)  ..........................  us Math two years ago