III)

1 . to/on/for

2 . with/for/after

3 . to/of/to

4 . ko điền/in/Since/with/ko điền/of

5 . with/to

6 . on/ko điền/of

IV)

1 . There was no electricity 50 years ago

2 . Last year , we were taught Maths by Mr.Ba

3 . A lot of people were killed

4 . What was being done at this time yesterday ?
5 . My tooth was hurt last week

V)

1 . threw => I threw the ball to Kien

2 . studied => Ha studied very well

3 . begin => I begin studying English

4 . lend => Ha lends me some money

5 . catch => I catch the ball from the dog

#Kunchan

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IV.

1. There was no electricity 50 years ago.
2. Last year, we were taught Maths by Mr. Ba.
3. A lot of people were killed.
4.  What was being done at this time yesterday ?
5. My tooth was hurt last week.

V.

1.I threw it last night.
2. He studied very hard.
3. She begins to work.
4. I lent her money 2 days ago.
5. We caught an adorable cat.