Who taught ________ to write the computer programs—Nobody. She learned it by __________.

_____ this village is extremely poor, the people think it is so important to keep the school going.[ ]

What is your plan for the holiday, Paul— I’ll go on a trip to Yunnan Province with my family.— _____.

you see it with your own eyes, Mike— Yes. Otherwise I _______you about it.

“Crash diets” make us lose weight fast and I am all into that. —But it_______better to work out.