463.The manager was worried about the press conference his assistant ___ in his place,but,luckily,everything was going on smoothly.
A.gave
B.gives
C.was giving
D.had given
464.I've not finished with my dinner yet.
But our friends _____ for us.
A.will wait
B.wait
C.have waited
D.are waiting
463.答案是C;考查动词的时态。
464.答案是D;根据语境得知朋友们此时正在等他们，故选进行时更符合句意。
