Not only his parents but also his brother to the Summer Palace. They haven't been back.

题型：单选题题类：常考题难易度：普通

云南省昭通市彝良县2017-2018学年九年级上学期英语期末考试试卷（含听力材料，无音频）

A、have been B、have gone C、has been D、has gone

举一反三

— Sorry, she isn't in. she _____ France.

—B: Sorry , I don't .But I think he ___the library.

—Yes. They ________ to the museum.

—They haven't been back.

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