The old professor travelled from one school to another, _______ first-hand information about the education situation in China. [ ]

Young children are often advised not to spoil their appetite by eating sweets ________ the three meals

You didn’t use to play tennis, ______ — Yes. I still like playing tennis now.

The restaurant is nice and the food is not bad, I still prefer eating at home.

They look so tired.–Yeah. They _____________ day and night. Sothey are all in poor health.