look!the teacher,together with his students.now working in the lab A.is B.are C.were D.was

look!the teacher,together with his students.now working in the lab A.is B.are C.were D.was
选什么?为什么?
英语人气:789 ℃时间:2019-09-29 01:48:49
优质解答
B
together with就前原则,look为现在进行
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