问题

Everything works out well ____, we are sure that the experiment will be completed on time

A:Therefore
B:While
C:However
D:Otherwise

正确答案是：

同类题型

Haven’t I told you that the computer needs______—Sorry,I forgot_______it fixed.I’ll send it forrepairs right away.

His father looks _________ and he islooking ________ at his son.

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