Can $ 500 _________ the cost of the whole trip?
| A．contain | B．cover | C．include | D．afford |
_____ three influenza type A virus subtypes（子类型） have been found in pigs．
| A．By far | B．As far as | C．So far | D．Till far |
Who would you rather ______ you repair your CD player?
| A．help | B．helped | C．helping | D．to help |
We decided to take a taxi．Luckily there was _____ waiting．
| A．some | B．another | C．any | D．one |
Ted has made up his mind to give it up, but on _____ second thoughts he determined to try______ third time．
| A．/ ; a | B．/ ; / | C．a ; a | D．the ; a |
—Aren’t you cold?
—____．I’m boiling．
| A．Take it easy． | B．That’s all right． | C．Not a little． | D．Far from it． |