问题

It was in 1969 ___ the Americanastronauts first succeeded in landing on the moon

A:to be making
B:to be made
C:to make
D:to have been made

正确答案是：

同类题型

The policeman’s attention was suddenly caught by a small box which ______ placed under the Minister’s car.

A nation can never isolate and it must ___________ with other nations for its development.

下列句中加点的词语，与现代汉语意义最接近的一项是

What did your mother say on the phone just now? — She asked me _____ I was getting on well with my new classmates

For the Turner sisters and their classmates，taking a parttime job might ______ their time for study.