听课
课程与PC端同步更新，充分利用零碎时间。做题
海量精选试题，想练就练，瞬间提分。答疑
海量精选试题，想练就练，瞬间提分。直播
名师大咖面对面，有问有大收获多。( )9.—I‘ve been told to pay the rent.
—But it‘s already been paid. It ______ by someone else.
A. must be B. may be
C. must be paid D. must have been paid
( )10. Montreal is larger than _______ in Canada.
A. any city B. any cities C. any other cities D. any other city
( )11. Human‘s brains are larger in proportion to their bodies than _______.
A. whales B. a whale C. that of whales D. those of whales
( )12. Before writing your article， ______， collect your material， and prepare an outline.
A. a topic should be selected B. a topic to be selected
C. your topic should be selected D. select a topic
( )13.—I usually travel by train.
—Why not ________ by plane for a change?
A. to try going B. trying to go C. to try and go D. try going
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