单选题With a standard bulb, only 5% of the electricity is ______ to light, the rest is wasted away as heat.
单选题The ______ family was invited to the party and had a wonderful time.
单选题Studies show that people are more ______ to suffer from back problems if they always sit before computer screens for long hours.
单选题Many people prefer large cars, ______ large cars are safer than small ones.
单选题It rained heavily in the south, ______ serious flooding in several provinces.
单选题______ you have finished your work, you are free to do what you like.
单选题Under no circumstances shall we accept those unreasonable terms.
单选题Watches turned out in their country are of much poorer quality than those made in yours.
单选题The climate of Hong Kong in winter is not as cold as ______.
单选题The news has just ______ that the president is going to visit China next month.
单选题If you had gone there to see the match, I"m sure you ______ seeing the Chinese team win.
单选题We"ll have begun our journey early tomorrow, in fact, ______.
单选题—"Is she older than you?"
—" Yes she is older than ______ two years".
单选题How long can you hold your ______ ?
A. breathe
B. breath
C. breathing
D. breathy
单选题Unless you have a good map, this place is very difficult to ______.
单选题There has been an ______ amount of rain in the dry area this summer.
A. uncommon
B. uncountable
C. unreasonable
D. unusual
单选题He is ______ a history student at Harvard University.
单选题What time does the bus ______ Bradford?
A. go away to
B. go away for
C. leave to
D. leave for
单选题It was in 1943 ______ the harmful smog made its appearance in Los Angeles.
单选题I find great ______ in her improvement.
A. satisfy
B. satisfied
C. satisfying
D. satisfaction