The business has ______ from having one office to having twelve branches.
| A．expanded |
| B．exploded |
| C．cracked |
| D．burst |
As you study a globe,you may notice that ______ of the large land and areas are connected,or ______so.
| A．most;almost | B．nearly;almost | C．mostly;nearly | D．almost;most |
The houses in this village are______built of bricks.
| A．most | B．almost | C．mostly | D．nearly |
The poisonous atmosphere will surely ______a lot of people.
| A．effect | B．impress | C．cause | D．affect |
Before the first nonstop flight made in 1949,it______necessary for all planes to land for refueling.
| A．would be | B．has been | C．had been | D．would have been |
—Have you found anything wrong with your computer?
—Yes,and I was about to give it up when an idea ______to me that it may be struck by some kind of virus.
| A．occurred | B．happened | C．took place | D．turned |