Mike lost his key. ______ couldn’t enter the room.

There is ________advertisement about the clothes store. You can have a look.

There is ____ time. You don’t need to hurry.—But I want to see her as early as possible.

We have a lot of homework______. We are very busy today.

Which of the two cameras are you going to buy?—I’ll buyof them，so I can give one to my friend．