【題目】The pilot asked all the passengers on board to remain ____ as the plane was making a landing.

A. to be seatedB. seating

C. to be seatingD. seated

【答案】D

【解析】

考查非謂語動(dòng)詞。句意：飛行員讓飛機(jī)上所有乘客在飛機(jī)降落時(shí)保持坐好。be seated 表示“坐著”，強(qiáng)調(diào)一種狀態(tài)，這里的 remain 是系動(dòng)詞，remain seated 就相當(dāng)于be seated，故用過去分詞形式。故正確答案為D。

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