问题

Science and technology are advancing soquickly that _____ is a possibility today may be a reality tomorrow

A:which
B:where
C:Instead of
D:who

正确答案是：

同类题型

________ what the teacher said if you think it is important.

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use the telephone on the table, sir–Under no circumstances _________ to use the telephone in the office for personal affairs.

The man ______ gave us a talk on science yesterday isa famous scientist.