As far as the professor（ ） , college students should get into the habit of studying by themselves.

It is important that the boy （ ） an adult to take care of him.

I could tell he was surprised from the _____ on his face.

Only those who have tasted bitterness will （ ） among others.

A new technique （ ）, the output as a whole increased by 20 percent.

Our visitors decided to stay in our city for _____ two days as they wanted to have a look around.

（ ） I fixed the plug properly, I still got an electric shock.

I recognized John （ ） he entered the room.

Mr. Brown is supposed to （ ） for Italy last month．

The most important is not_____ you do, but_____ you do it.

It’s too late to go out. _____， it’s going to rain.

It is high time that the international community （ ） together to fight against terrorism.