2022黑龙江统招专升本英文每日一题84

4. The road was wet this morning. It ______ last night.

A.must be raining B.must rain

C.must have rained D.have been rained

4.【答案】C。解析：考查情态动词。句意：今天中午人行道是泥的，隔天一定下雨了。对过去动作做肯定推论，需要使用must have done表现形式。故选C。