______ is our duty to try our best to deal with each challenge in our education.

题型：广东省月考题难度：来源：

______ is our duty to try our best to deal with each challenge in our education. [ ]
A. It
B. This
C. That
D. Its

答案

举一反三

is believed that Bell invented the first telephone in 1876. [ ]
A. This
B. That
C. It
D. One

题型：0115 月考题难度：| 查看答案

You will find ______ useful to take a dictionary with you.[ ]
A．that
B．one
C．it
D．this

题型：期中题难度：| 查看答案

Ann finds ______ very difficult for her to play the piano well.[ ]
A．this
B．that
C．what
D．it

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I think ______ necessary for us to learn English well. [ ]
A. it
B. its
C. that
D. that"s

题型：同步题难度：| 查看答案

______ wasn"t easy to win the match. [ ]
A. It
B. That
C. This
D. They

题型：同步题难度：| 查看答案