Hurry up! The bus is coming.–Wait a minute. Don’t cross the streetthetraffic lights are green.

You are not fit at all. You need to eat ______ fast food and exercise ________ .

Usually pilots need about a decade of experience _______ they can be promoted to captain

I don’t know who invented_____digital camera, and it’s really _____ most useful invention.

Believe me, all your efforts will _______ some day. — Thanks for your encouragement.