More than seven in ten get angry ________ to wait longer than one minute for a web page to be downloaded.
| A．if forced | B．unless forced | C．once forcing | D．until forcing |
The meetingfor two hours,but they stillany agreement.
| A．has been going on;haven’t reached |
| B．has been going on; haven’t been reached |
| C．was going on; haven’t reached |
| D．was going on; haven’t been reached |
—Dad, when shall we go to visit my grandpa?
—Grandpa is very busy at present．We'll go to see him whenever __________.
| A．he is convenient | B．he will be convenient |
| C．it is convenient to him | D．it will be convenient to him |
Do you think the idea he stuck ____correct?
| A．to proved | B．to prove | C．proved | D．to proving |
The hungry man eats his food _______he hadn ' t eaten for a week.
| A．as if | B．even though | C．such as | D．like as |
We must ________ our task, however hard it is.
| A．carry about | B．carry off | C．carry on | D．carry away. |