This is no-smoking zone. Can’t you see the sign on the wall—–Oh, sorry. I ________ it.

ed a lot of questions, and none of______ was easy to answer.

Battery-operated slippers are used ______ seeing inthe dark.

What do you know about that tennis player?— He ________ third in the world. [ ]

We have red and yellow T-shirts. Which color do you like —I’m afraid . I think blue will be OK.