Cable TV began in 1948 in the USA, but it took 50 years ________ 66 percent of A

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Cable TV began in 1948 in the USA, but it took 50 years ________ 66 percent of American households
had it.

A．before

B．when

C．after

D．until

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解析

略

举一反三

________ excited us was that more than 100 miners trapped in the Wangjialin flooded coal mine were saved alive.

A．It

B．What

C．As

D．Which

题型：不详难度：| 查看答案

The news spread quickly through the village ________ the war had ended, ________ made villagers
wild with joy.

A．which; that

B．that; what

C．that; which

D．what; which

题型：不详难度：| 查看答案

24. The Niagara Waterfalls, ______ is shaped like a semicircle, are 670meters wide, and fall 56 meters in an awesome white sheet of water.

A．what

B．where

C．the largest of which

D．in which

题型：不详难度：| 查看答案

____ enters the computer rooms should take off his shoes in order to keep them clean enough.

A．Who

B．Whoever

C．What

D．Whatever

题型：不详难度：| 查看答案

We could see the temple quite clearly from _________we lived.

A．what

B．which

C．where

D．that

题型：不详难度：| 查看答案