--The research on the new bird flu virus vaccine is challenging and demanding. Who do you think can do the job?
--________ my students have a try?
| A．Should | B．Shall | C．Will | D．May |
When Alice came to, she did not know how long she_______there．
| A．had been lying | B．has been lying |
| C．was lying | D．has lain |
My parents made _____ their daily routine to go out for a walk in the evenings.
| A．this | B．it | C．that | D．what |
If you make__ most of forty-five minutes classes day after day, there will be ______switch in grades.
| A．/; / | B．the; / | C．/; a | D．the ; a |
I strongly suggest the person ________ out and explain all that has happened.
| A．referred to stand | B．was referred to stand |
| C．was referred to standing | D．referred to standing |
— Shall I open the window to let some fresh air in? —No，________ .
| A．I’d rather not | B．I’d rather you not |
| C．I’d rather you didn’t | D．I’d like not to |