The two friends _____ on the Internet for three hours, and they would go on till the next morning.
A.had been chatting | B.had chatted | C.were chatting | D.has been chatting |
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The two friends _____ on the Internet for three hours, and they would go on till the next morning.
A.had been chatting | B.had chatted | C.were chatting | D.has been chatting |