—Would you like an ice­cream，Diane?—No，thanks.I ____ eat them.They're bad for my teeth.

We're tired because we have ________ yin.

I think Jack does his homework _________ than anyone else in his class.

It was _________ difficult work ________ nobody can do it.

Cindy is a good student. She’s ________ the first to come to school. She ________ comes to school late.