4.The use of satellites makes __________ possible to watch events ______________ they happen thousands and thousands of miles away.A.it,as B.it,when C.this,when D.that,whether为什么啊

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4.The use of satellites makes __________ possible to watch events ______________ they happen thousands and thousands of miles away.A.it,as B.it,when C.this,when D.that,whether为什么啊
4.The use of satellites makes __________ possible to watch events ______________ they happen thousands and thousands of miles away.
A.it,as B.it,when C.this,when D.that,whether
为什么啊

4.The use of satellites makes __________ possible to watch events ______________ they happen thousands and thousands of miles away.A.it,as B.it,when C.this,when D.that,whether为什么啊
b it是形式宾语后边表示什么时候发生

B

A

A

选 B 因为 make it +adj 是固定的格式,至于第二个空,就是指当它们发生的时候 ,这是从意思上来理解的

A

A
排除法,首先make it possible to do sth 固定句型,使。。成为可能。故排除c,d。
A,B比较的话显然A合适