13．Many medical scientists are racing__________time to find a cure for H1N1 as soon as possible.
| A．on | B．against | C．for | D．In |
The Spanish football team won the South Africa World Cup on July 13th, ______ it the 8th country to have won the World Cup.
| A．made | B．making | C．to make | D．to have made |
Life is hard at present. Hardly by some price or other going up.
| A．a day goes; with | B．a day goes; without |
| C． does any day go; with | D．does any day go; without |
The advantage human beings have to the sun is worth discussing.
| A．take of | B．play with | C．have on | D．do with |
—How long in Shanghai？
—Just the weekend. I've to be back for an important meeting to be held next Monday.
| A．have you stayed | B．are you staying |
| C．did you stay | D．do you stay |
—I wonder why Sara looks worried today.
—I'm not sure，but she a small accident driving here.
| A．could have | B．might have |
| C．might have had | D．must have had |