LONG IS WORKING IN A BICYCLE FIRM. HE ... THERE SINCE 1978.A. HAD...

17. - 3500 CAU TRAC NGHIEM ON TAP AV THCS

3500 CAU TRAC NGHIEM ON TAP AV THCS

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Đáp án tham khảo

17. Long is working in a bicycle firm. He ... there since 1978.

a. had worked

b. has been working

c. were working

d. was working

-> b