John, look at the time. ________ you play the piano at such a late hour?
A. Can B. Need C. May D. Must
He looked as though he _________ a ghost（鬼）.
A. saw B. has seen C. have seen D. had seen
He stood for an instant with his hand still ___________.
A. raised B. raising C. rose D. risen
_____ is known to all, the age _______ children can go to school is seven.
A. What; which B. It; when C. As; at which D. Which; when
He told me that he was very familiar _______ the surroundings there and I told him that the
people there were familiar _____ me.
A. with; to B. to; with C. for; on D. over; at
. When the teacher came in, the student pretended ________ his lessons.
A. to do B. to have done C. to be doing D. to be done
