The doctor advised Elsa strongly that she should takea good rest, but______ didn

题型：同步题难度：来源：

The doctor advised Elsa strongly that she should takea good rest, but______ didn"t help.[     ]
A. she
B. it
C. which
D. he

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举一反三

Is _____ necessary to return the book tomorrow？[     ]
A. this
B. that
C. it
D. which

题型：专项题难度：| 查看答案

______must be hard to explain the question. [ ]
A. That
B. This
C. It
D. You

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They find ______ difficult ______ on real ice.[ ]
A. it; skate
B. that; to skate
C. that; skating
D. it; to skate

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____ seems that ____ not enough time to go over all the lessons before the exam.[     ]
A. It; there is
B. There; there is
C. It; there has
D. They; there have

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I find it easy ___ out the math problems.    [     ]
A. work
B. working
C. works
D. to work

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