—Who______ it be that is knocking at the door?
—It ______ be Father, but I’m not sure.
A. can; must B. can; may C. must; can D. may; must
The Smith’s family, which __________ a large one, ____________visit BeiJing this summer.
A. are, are going to B. is, are going to C. is, is going to D. are, is going to
My old father began to study computer science at the age of sixty in order that he might ___ times.
A. come up with B. keep up with C. end up with D. put up with
—You must be tired out yesterday. —Oh, _____, I worked all day non-stop.
A. not a bit B. not at all C. not a little D. not nearly
Lin Feng is said ____ abroad, but I don’t know which country he studied in.
A. to study B. to be studied C. to have studied D. to be studying
A study shows that _______ a boarding school would help students cultivate (����) their independence while being away from their parents.
A. attending B. admitting C. applying D. admiring
