—What are you mailing, Ryan?
—A textbook __________ a new method of teaching physics. I want my friends to take a look at it.
| A．is based on |
| B．based on |
| C．basing on |
| D．which based upon |
We usually have six lessons a day，and each of them__________45 minutes.
| A．last | B．lasts | C．have | D．need |
Both Kate and I__________ready for the picnic now.
| A．is not |
| B．is getting |
| C．are getting |
| D．am getting |
Neither Wei Hua nor Ann__________on the team.
| A．is | B．are | C．goes | D．go |
— How much__________the shoes?
—Five dollars__________enough.
| A．is; is | B．are; is | C．are; are | D．is; are |
A vast area north of the Yangtze River__________by the first heavy snow of the new year,causing difficulties to the post-festival road transport.
| A．were affected |
| B．was affected |
| C．had affected |
| D．has affected |