题目内容

Computers are so popular in our country that every pupil knows _____ e-mails.
A.how can he sendB.how does he send
C.how to sendD.how sending
C
本题know后跟的是从句,应该用正常顺序,故不选AB,在英文中,可用疑问词+动词不定式to do代替从句,故本题选C。
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