Jim is good at maths, but his physics is _________.

The sick monkey to the animal centre tomorrow morning. — I hope it will be better soon.

It is well known to all that water, ______ enough, can change into ice quickly．

I’m a football fan. I was interested in everything _____is about the 2010 World Cup.

Is your brother at home?—No. He ________ the library. He hasn’t come back yet.