Dad, can I go to the movies tonight —Sure, but you ________ come back home before 9 o’clock.

Hi, Tony. ____ is my friend, Jack.—Hello, Jack! Nice to meet you.

There’s enough time for you to go to the airport.You hurrynow.

If there are natural resourcesin a country, it is common for it to export some of them

It was not until the 18th century that manrealized that the whole of the brain was involved in the working of the mind，