The helicopters ________ water on the plants.

题型：单选题题类：常考题难易度：普通

牛津上海版（试用本）2018-2019学年小学英语五年级上册Module 4 The natural world Unit 3 Fire Exercise 5

A、drops B、are drop C、are dropping

举一反三

—Yes, they________.

【例】—What are you doing?

—We're touching the ground.

—What are you doing?

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