题目列表(包括答案和解析)
15.______ is often the case, we have worked out the production plan.
A.Which B.When C.What D.AS
14.The flu is believed _____by viruses that like to reproduce in the cells inside the human nose and throat.
A.causing B.being caused C.to be caused D.to have caused
13.-How did you find the talk this morning?
-______.
A.By asking my students B.It was easy to find
C.Very disappointing D.Just in time for it
12.The flowers _________sweet in the botanic garden attract the visitors to the beauty of nature.
A.to smell B.smelling C.smelt D.to be smelt
11.--You have made progress in your English study, haven’t you?
--Yes, but much ____.
A remains to do B is remained to do
C remains to be done D is remained to be done
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