题目内容

Sentence transformation

A snowman is made by us.

simple past tense(一般过去时)

________________________

present progressive tense(现在进行时)

________________________

present perfect tense(一般完成时)

________________________

future tense(一般将来时)

________________________

答案:
解析:

  A snowman was made by us.

  A snowman is being made by us.

  A snowman has been made by us.

  A snowman will be made by us.


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