1) You____ all those clothes! We have a washing machine to do that sort of thing
A) needn't have washed      B) shouldn't have washed
C) must not have washed    D) can not have washed
2) John's score on the test is the highest in the class; he____ last night.
A) should study            B) should have studied
C) must have studied      D) must have to study