Thailand has decided to begin building its first standard-gauge railways in cooperation with China, ______may cost $12.2 billion.
A. when B. that C. it D. which
— Excuse me, can you show me the way to the nearest bus stop?
— Sorry. I’m a stranger here. I ______ here until my guide arrives.
A. stand B. have stood
C. am standing D. will stand
When Mary arrived she found all her children ______ for nearly two hours.
A. have gone to sleep B. fell asleep
C. was falling asleep D. had been asleep
The silence of the library ______only by the sound of pages being turned over.
A. had been broken B. breaks
C. broke D. was broken
President Xi has advised young people to avoid staying up late, ______ heated response from Internet users on microblog.
A. having drawn B. drawing
C. to draw D. Drawn
Although nuclear power may lead to disasters, ______ the nuclear power industry has been operating safely for three decades in China.
A. and B. but C. so D. yet
