559.You really need to go out and get some fresh air and sunshine.You _____ overworked during the last two weeks.
A.have been
B.were
C.had been
D.would be
560.Five of the 12 bronze animal heads ____ to China,with seven other ones still missing.
A.returned
B.had returned
C.have been returned
D.have returned
559.答案是A;during/in the last two weeks常与现在完成时连用。
560.答案是A;考查动词的时态。根据上文语境，说明一直在走并且有造成了现在的影响之意，故选完成进行时。
