In salad bars the waiter does not bring you salad. You have to____ yourself, usually to as much as you want.
| A．bring | B．serve | C．help | D．supply |
He didn’t regret saying what he did but felt that he ____ it differently.
| A．could express | B．would express | C．could have expressed | D．must have expressed |
If China’s space technology has achieved ____ breakthrough in this field, it really is ____ amazing wonder.
| A．the; an | B．a; an | C．不填; the | D．a; 不填 |
Is it high time that the children _____ go to school ?
| A．will go | B．went | C．would go | D．to go |
We are all _______about her safety . As far as I am _____, this case _____her .
| A．concerns ,concerned , concerns | B．concerned , concerned , concerns |
| C．concerns , concerns, concerned | D．concerning ,concerned ,concerns |
After supper Wang Wei put her head down on her pillow and went to sleep but I stayed _______.
| A．to be waking | B．waked | C．waking | D．awake |