The streets are all wet.It ___ during the night.

A. must be raining  B. must have been rain   C. had to rain   D. must have rained

The street are all wet.It ___ during the night.

A. must be raining  B. must havge been rain  C. had to rain   D. must have rained

①You must be tired, ________?

②It must be raining now, ________?

③It must have rained last night, ________?

④He must have been to Beijing many times, ________?

It ______ heavily when he got back home for he was wet all over．

It ______ heavily when he got back home for he was wet all over．

         A．was raining                            B．must have been raining

         C．must be raining                         D．rained