It is hard to say what kind of person he is. Sometimes he is very friendly; at other times he _______ be very cold.
A. can B. must C. will D. shall
In my opinion, _______ matters is not one’s looks, but one’s inner thoughts.
A. that B. it C. what D. this
What a table! I’ve never seen such a thing before. It is _______ it is long.
A. not half as wide as B. wide not as half as
C. half not as wide as D. as wide as not half
— How long do you think it will be _______ the USA recovers from the losses of the financial crisis?
— Perhaps four or five years.
A. when B. since C. that D. before
Listening attentively in class and reviewing in time _______ a sure way to improve your learning, and this is especially true _______ it comes to standard tests.
A. are; when B. is; when C. is; while D. are; as
_______ difficult the task may be, we must finish it on time, because we can’t miss _______ a precious opportunity．
A. Whatever; so B. However; such C. However; so D. Whatever, such
