I found _________difficult to work out the problem.[ ]A. it"s B. th

题型：安徽省期中题难度：来源：

I found _________difficult to work out the problem.[      ]
A. it"s
B. this
C. that
D. it

答案

举一反三

____  __ is known to us all that 2012 Olympic Games will take place in Britain．[      ]
A. It
B. As
C. Which
D. What

题型：安徽省期中题难度：| 查看答案

I think         necessary to do some running in the morning.[     ]
A. that
B. it
C. this
D. one

题型：安徽省期中题难度：| 查看答案

Many people in the West make ________ a rule to buy Christmas presents for their relatives and friends.[     ]
A．this
B．that
C．it
D．them

题型：同步题难度：| 查看答案

I hate________when my parents argue.I need a happy home environment.[     ]
A. it
B. that
C. these
D. them

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________is impossible to learn a foreign language well in such a short time.Rome was not built in one day.[ ]
A. This
B. It
C. That
D. Which

题型：同步题难度：| 查看答案