___ of students in our class are from peasant families.
At the evening party the host said ______ was able to solve the riddle could get a nice present as a reward.
Hardly ______ to the airport ______ he was surrounded by many journalists and fans.
Thanks to the measures ______ by the local government , the polluted river is becoming clearer and clearer and fish have begun to show up in it.
The boys are still playing basketball happily on the court ______ it is raining heavily.
She ______ on a new novel ever since this summer and it is supposed to ______ at the beginning of 2011.