题目内容

1.Not until we had reached the mountain top____how high we had climbed.

A) did we realize
B) we did realize
C) do we realize
D) we realize

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2.The doctor told us it was a robot_____performed the surgery.

A) whom
B) that
C) which
D) what

3.If I_____the manual earlier, I would have been able to fix the machine.

A) got
B) get
C) have got
D) had got

4._____self-driving cars are coming, the concept of driving will change dramatically.

A) Now that
B) Even though
C) In case
D) As if adt

5.Students____careers in international business can turn to us for help.

A) pursuing
B) pursued
C) pursue
D) have pursued