My sister has worked as an engineer since she ____ back from the United States.

1. My sister has worked as an engineer since she ____ back from the United States.

A. came B. comes C. hascome D. hadcame

【考点】

一般过去时;

【答案】

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单选题普通

1. The little girl ____ on her bed when her mother came in.

A. cries B. cried C. iscrying D. wascrying

单选题容易

2. Jim ____ the Terracotta Army three years ago.

A. visit B. visited C. visits

单选题容易

3. Alice ____very nervous at the interview. She couldn't think of anything to say.

A. is B. was C. willbe D. hasbeen

单选题容易