Last Sunday, we went to China Dinosaur Land in Changzhou. We ____________ there for 10 hours.

She is too busy to help us finish the work.— Let’s do it ________.

The new iphone 5 costs so________that I don’t think a student can________ it.

What’s this in English? — It’s ________ basketball.

Lily often helps her sister _____ her homework. [ ]