At school, the teachers and students ___________________ follow the rules.

Would you like to go ____________a walk _____________ the park this afternoon?

It started to rain heavily while I _________________ at the bus stop.

We were having dinner when the telephone (ring)____________.

This test must (do)_____________ carefully.

Supply the correct tense or form of the verb in parentheses.

What__________ you (do)____________ at 3 o’clock yesterday?

Jane want to know more about the ________________ of Viet Nam so he visited the museum of Ethnology.