She was afraid __________ the dog in case it became dangerous.
The experiment has_________ the possibility of the existence of any life on that planet, but it does not mean there is no life on other planets.
---I haven't got the reference book yet, but I'll have a test on the subject next month. ---Don't worry. Youhave it by Friday.
Thousands of foreigners wereto the Shanghai World Expo the day it opened.
--why, Jack, you look so tired!
--Well, Ithe house and I must finish the work tomorrow.
The doctor is skilled at treating heart trouble and never accepts any gift from his patients, so he has a very good.