_______ of us has some bad habits. We must get rid of them.

In the bookshop, a reader asked the shopkeeper ________ “Who Moved My cheese”was an interesting book.

Look! There is beautiful rainbow in the sky． —Wow, it’s so beautiful. I’d like to take a photo ofrainbow before it disappears．

Every Earth Day , We are made _____ signs to warn people to protect the nature .

We should never ________till tomorrow what we can do today.