Tell me since when he ______ in your school.
A. taught
B. has taught
C. teaches
D. had taught
19.答案为B 句中since when表示从何时起到现在为止,句中谓语要用现在完成时态。
第1题:
A、is, to translate
B、has, to translate
C、is, in translating
D、has, in translating
第2题:
A、inform
B、uniform
C、tall
D、tell
第3题:
第4题:
He__me he was leaving on Wednesday.
A. said
B. told
C. tell
第5题:
Scientists say it may be five or ten years _____ it is possible to test this medicine on human patients.
(A) since (C) after
(B) before (D) when
选B
之前
科学家说这个药想在病人身上试验,还要等个5到10年。。。
第6题: