--- 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．Shall | B．Must | C．Will | D．May |
-----Why can’t you answer my question? I gave you some tips just now.
-----Sorry. I ______a magazine.
| A．read | B．had read | C．was reading | D．am reading |
_______ in the leg made it impossible for him to walk home.
| A．Injured | B．Having injured | C．To be injured | D．Being injured |
The parade went_______the streets to celebrate the traditional festival.
| A．across | B．by | C．through | D．towards |
When _______cruel man was hurting the children, there were no adults around who were able to stop______hurting.
| A．the, the | B．the, 不填 | C．a,不填 | D．a, a |
Helen devoted herself _______ to her research and became a top scientist in the field of applied physics.
| A．seriously | B．extremely | C．entirely | D．strictly |