The boy decided to climb the mountains _______ he knew he would face many difficulties.
| A．as though | B．unless | C．even though | D．even |
The roof fell _______ he had time to dash into the room to save his baby.
| A．after | B．as | C．before | D．until |
The visitors were admiring the charming flowers ______ it started to rain.
| A．as | B．since | C．while | D．When |
____ the movie star has always been the focus of much media attention, he tries to lead a normal life．
| A．When | B．While | C．Unless | D．Since |
General Secretary，Xi Jinping stressed that cross－strait cooperation would be strengthened________ the two sides could agree to oppose Taiwan independence.
| A．as long as | B．even if | C．unless | D．until |
It’ll be another 50 years _________ China is expected to reach the level of a medium developed country.
| A．since | B．before | C．that | D．when |
Today acupuncture has become popular round the world, ________ have other traditional Chinese medicines.
| A．so | B．as | C．while | D．like |
It was Asimov was eleven years old his talent for writing became obvious.
| A．that, when | B．When, that |
| C．when, when | D．when, which |
The fact has worried us more and more students have got near-sighted.
| A．what | B．which | C．that | D．though |
You never really understand a person _______ you consider things from his point of view.
| A．if | B．once | C．as | D．until |
How did it come about ________ a quiet person should appear so wild today?
| A．whether | B．that | C．if | D．what |
_______ human beings use it in a wrong way, like we did with nuclear technology, the advancement of science and technology has never led to decline of human development.
| A．While | B．Unless |
| C．As long as | D．Before |
— What if Mr. Wang is against our project at the meeting?
— He won’t be we ask for his advice in advance.
| A．though | B．unless | C．if | D．while |
He has been in bed ______ he fell off his bike a week ago.
| A．even if | B．soon after |
| C．now that | D．ever since |
Bach died in 1750, but it was not until the early 19th century____ his musical gift was fully recognized.
| A．while | B．though | C．that | D．after |
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