Question

【题目】—I think Amy and Steve can help me with the school project.

—But they ________ back to Australia.

A. go B. went C. have gone D. were going

Answer 1

【答案】C

【解析】句意：-我认为Amy和Steve能帮助我做这个学校项目。-但是他们已经回到了澳大利亚。go去，动词原形；went是go的过去式；have gone是现在完成时；were going过去进行时态。根据句意But可知，Amy和Steve两个人不能帮助他，因为他们已经回去了，应该用现在完成时态，故选C。