--Is this a __________?--No．It’s a clock．

------Do you know the woman who is looking____ over a patient? ------ Yes. She is one of the best ____ in our hospital.

I am tired after the long wall. I want to have a _______.

It’s not safe for teenagers to give out too much_____ about themselves on the Internet.

—Do you like the ________ of the bike?—Sure, I like red very much.