What’s the noise ? It sounds as if it comes from upstairs. –______. It must be the window-cleaner working , next door.

I don’t think possible for us to learn a foreign language well without hard work.

There’s still an hour left, you _____ go in a hurry.

My sister is only four years old, but she can look after ________ now.

I think ______ of the materials I listened to at the beginning of the exam ______ easy. — I think so.