(2012年重庆卷，34)Evidence has been found through years of study ________ children's early sleeping problems are likely to continue when they grow up.
| A．why |
| B．how |
| C．whether |
| D．that |
Improving your spoken English by talking much with foreigners from Britain would ________，for practice makes perfect.
| A．make sense | B．make sure |
| C．make believe | D．make public |
________the danger from enemy action，people had to deal with the lack of food，clothing，fuel and almost everything.
| A．As far as | B．As long as |
| C．As well as | D．As soon as |
In his victory speech ________before a huge crowd of his supporters，Obama declared that “change has come to America”．
| A．having delivered | B．to be delivered |
| C．delivering | D．delivered |
This kind of cloth ________well，and that is why it ________well.
| A．washes；sells | B．is washed；sells |
| C．washes，is sold | D．is washes；is sold |
The habit of having eight hours' sleep a night she was accustomed to ___greatly since last year.
| A．change | B．has changed | C．changing | D．have changed |