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为什么这里要用助动词do?Thereappearedtobenobetterway,?a.wasthereb.weretherec.didthered.didn'tthere这句话没有出现助动词did?

题目详情
为什么这里要用助动词do?
There appeared to be no better way, _______?
a. was there b. were there c. did there d. didn't there
这句话没有出现助动词did?
▼优质解答
答案和解析
这句话没有出现助动词did?
appeared
就是因为这个词
appear在这里必须要do提问