From space, the earth looks blue. This is ____about seventy-one percent of its surface is covered by water.
| A． why | B． how | C． because | D． whether |
My headache is killing me．I ______it______away．But now it’s getting worse and worse．
| A．think; is going | B．thought; was going |
| C．have thought; is going | D．had thought; was going |
---Rose, mind your step! Aunt Jane slipped over on the wet floor and broke her leg yesterday．
--- ______．
| A．It’s none of your business | B．It doesn’t matter to me |
| C．Thank you for your reminding | D．I will remember your words |
The door______．Better have it repaired．
| A．won’t shut | B．hasn’t been shut | C．won’t be shut | D．isn’t shut |
Nine thousand guests took part in the outdoor ceremony, ______ that impressed so many people at the White House．
| A．that | B．this | C．it | D．one |
The local government is trying all out to find out who is______the forest fire．
| A．to blame for starting | B．to blame to start |
| C．to be blamed for starting | D．to be blamed to start |