th•FOR

They are working for a boss

I haven't seen her for 2 years

•SINCE

He has got married since  1990

This school has been built since 2000

•IN    I live in HCM city

        I was born in 2002

• BEFORE

They had finished their assignment before going to the concert.

She had finished her homework before going to bed.

• ON

My mother is working on the farm

There is a funny cartoon on TV now

• AT

She will be here at 5 o'clock

She is at home now

• AFTER

We've had meeting after meeting to discuss this point

There's a good film on the day after tomorrow

•BETWEEN 

We're expecting her to arrice between 2o'clock and 2.30

You shouldn't eat between meals

2,

• what will you do if you go to school next week?

   If i study harder , i can pass the exam

• i can't do this exercise because it is too difficult

  Because it rained heavily yesterday, we didn't go out

• this house is so beautiful

Don't be so stupid

13) On the second day we would go on a picnic together.

- In the summer the weather is very hot 

14) If she hadn't stayed up late last night, she wouldn't be so tired now.

- If I had a million USD, I would learn karate 

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