If you feel tired and sick of fat foods, that is _______ you have to go to the hospital for a medical examination.
| A．why | B．what | C．when | D．whether |
The meeting started at ten o’clock, but the chairman has not _________ yet.
| A．turned up | B．turned down | C．turned out | D．turned off |
_________ impressed the visitors was _______ the trees were so tall in Vancouver.
| A．that; that | B．what; what | C．what; which | D．what; that |
__________ a terrible storm would attack the old town.
| A．Word came that | B．Word that came | C．Word came which | D．Word comes that |
After entering the meeting hall, Mike _______ a friend and went over to greet him.
| A．knew | B．searched | C．spotted | D．realized |
The aging population in China will greatly _______ the whole society.
| A．effect | B．effort | C．affect | D．afford |