—Must I clean the blackboard now? —No, y
题型:选择题
问题:
—Must I clean the blackboard now? —No, you _______ clean it later.
A.must
B.needn’t
C.can
D.shouldn’t
—Must I clean the blackboard now? —No, you _______ clean it later.
A.must
B.needn’t
C.can
D.shouldn’t