801.Thank you for all your hard work last week.I don't think we _____ it without you.
A.can manage
B.could have managed
C.could manage
D.can have managed
802.How's your tour around the North Lake?Is it beautiful?
It ______ be,but it is now heavily polluted.
A.will
B.would
C.should
D.must
801.答案是B;根据上下文暗示，此题为与过去事实相反的虚拟语气句，故选B。
802.答案是C;should表示按常理推断应该,理应。
