What time would it be convenient _____us to meet again?

She didn’t want to go to Africa: probably （ ） the weather is too hot.

When I go out in the daytime I use the bike _____ the car if I can.

The first textbook（ ） for teaching English as a foreign language came out in the 16th century.

（ ） my delight, our school football team won the game easily.

I appreciate （ ） the opportunity to study abroad two years ago.

Air pollution is obviously one of the major _____ of city life.

It is often _____ that human beings are naturally gifted to speak.

I told them I was perfectly _____ to help if they asked.

To learn Chinese cooking, you should practice _____.

In order to buy her house she had to obtain a_____from the bank.

After （ ） the numbers in every possible combination, we finally hit on a solution.