Students should respect teachers and parents _______ just thinking for themselves.
Michael ______ be a policeman, for he is much too short.A. needn’t B. can’t C should D. may
Why!I have nothing to confess(坦白) . ______ you want me to say?
The road is covered with snow.I can’t understand ______ they insist on going by motorbike.
He lifted the receiver as soon as the telephone rang but ____ it on the table at once.
Don’t believe him.He always _______ promises,but never _______ .