Reportedly yesterday a group of American soldiers were walking along the road in Iraq when a bomb（炸弹） was _____, three of whom were killed.
| A．set about | B．set off | C．set up | D．set out |
Some students have trouble _______grammar while others have difficulty—___ new words.
| A．in; remember | B．for; to remember |
| C．on; remembering | D．with; remembering |
We were going out for a walk ________ it began to rain.
| A．while | B．before | C．as | D．when |
— What did Tina say just now?
— She asked ____ this summer holiday.
| A．whether could you teach her dance |
| B．that whether you could teach her dance |
| C．if could you teach her dance |
| D．if you could teach her dance |
Bill’s fully ____ from his heart disease. He is very happy.
| A．suffered | B．returned | C．resulted | D．recovered |
While____the dog,you should take care not to____.Otherwise,it may be dangerous to strangers.
| A．walking; get loose | B．walk; be loose |
| C．walking for; get it loose | D．training; get it run |