Look At, Look For, Look After

I hear he is looking___a job.

a. at
b. for
c. after

Could everyone please look___the lost keys?

a. at
b. for
c. after

My sister looks___the kids on Saturday.

a. at
b. for
c. after

Why is she looking___me like that?

a. at
b. for
c. after

Look___those lovely flowers over there.

a. at
b. for
c. after

I'm looking___Tom. Have you seen him somewhere today?

a. at
b. for
c. after

This is very valuable. Please look___it.

a. at
b. for
c. after

I have lost my key. I'd better look___it.

a. at
b. for
c. after

I'll see you again soon. Look___yourself.

a. at
b. for
c. after

In the museum a lot of people were looking___the beautiful painting.

a. at
b. for
c. after