The lack of eco-friendly habits among the public is thought to be a major ____ of global climate change.
| A．result | B．cause | C．warning | D．reflection |
John as well as the other children who ______ no parents ______ good care of in the village.
| A．has; is being taken | B．has; are being taken |
| C．have; is being taken | D．have; are being taken |
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 |