Modern science has given clear evidence ________ smoking can lead to many diseases.(2011·天津，13)
| A．what | B．which | C．that | D．where |
The thought came to him ________ he should immediately leave the hotel.
| A．if | B．what | C．that | D．as |
Today’s paper carries an exciting _______________ of the match.
| A．discount | B．account | C．count | D．accountant |
He found the boy __________ to a tree in front of the house.
| A．tying | B．tie | C．tied | D．to tie |
During her childhood Susan read a lot about Chinese history, from which she _________ greatly in her work in China now.
| A．observes | B．recovers | C．recognises | D．benefits |
One Friday, we were packing to leave for a weekend away _______ my daughter heard cries for help.
| A．after | B．while | C．as | D．when |