Internet shopping is really ____ when people are sure of its safety.
| A．taking off | B．taking up | C．setting up | D．setting off |
The World Wide Web is sometimes jokingly called the World Wide Wait because it ______ be very slow.
| A．should | B．must | C．would | D．can |
—Would you like me to help you with the maths problem?
—___________ It’s a most difficult one.
| A．With pleasure. | B．Why not? |
| C．That’s all right. | D．It’s my pleasure. |
We were going out for a walk ________ it began to rain.
| A．while | B．before | C．as | D．when |
I want to buy that kind of cloth because I _____ the cloth _____ well.
| A．have been told; washes | B．have told; washes |
| C．was told; washed | D．have been told; is washed |
Tomato, which used to be called “love-apple”, is not ____but ______.
| A．fruit; vegetable | B．fruit; a vegetable |
| C．a fruit; a vegetable | D．a fruit; vegetables |