Any opportunity should be made ______ of _______ your spoken English.

When first ______to Britain, tea was not so popular like today. 

____several times，but unfortunately，the boy still couldn’t smooth away the problem on his own.

In the near future, China will increase supply of smaller houses,       to help low-income families to buy houses of their own.

China is known ______ greatly in terms of its cultural values over the past few years.