—The research on the new flu virus vaccine is challenging and demanding. Who do you think can do the job?
—_______ my students have a try?
| A．May | B．Must | C．Shall | D．Will |
This is the deepest swimming pool _______ I have ever seen in China.
| A．that | B．what |
C．where | D．Which |
Kathy told me that all the doors and windows _______ when she arrived this morning.
| A．have cleaned | B．have been cleaned |
C．had cleaned | D．had been cleaned |
It was in the forest _______they found the lost cow.
| A．where | B．when |
| C．that | D．as |
He knows several languages ________ English, French and Japanese.
| A．such as | B．for example |
| C．according to | D．that is |
John learn French and Spanish at the university. He is good at French, but can’t speak thefluently.
| A．later | B．late |
| C．latter | D．latest |