—Have you       that Amy’s a little quiet these days?—Yes, I wonder what has happened to her．

- The twins look almost the same. - They are similar_______ many ways though they are brought up_______ different families.

It is dangerous for teenagers to give out too much     about themselves on the Internet. 

I know the importance of the math test. It _______ 30% of the final exam. 

My brother works in a hospital_______ our flat, so he has to live there.