答案：D
根據(jù)時(shí)態(tài)一致的原則,這里用過去式形式,因?yàn)楹竺嬗玫氖莖pened.
句意：當(dāng)門一打開,一班所有的學(xué)生都出去了.
class one___all out when the door opened
class one___all out when the door opened
a:are b:is c:has d:was
a:are b:is c:has d:was
英語人氣：397 ℃時(shí)間：2020-04-23 08:52:56
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