Hi,我們又見面啦!
【句意】我們的教室必須保持干凈.
1.must 情態(tài)動詞,后面要加動詞原形,所以排除 C D
2.教室 和 保持 應(yīng)該是被動關(guān)系,即:被保持干凈
被動語態(tài)的表示方法:be + 動詞ed 形式,所以選 B
Our room must ___ clean.A.keep B.be kept C.to be D.kept
Our room must ___ clean.A.keep B.be kept C.to be D.kept
英語人氣:419 ℃時(shí)間:2019-12-09 20:16:02
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