Do you like your math teacher? —Sure, because he is the teacher ___ helps me a lot.

I want to write __________ article about the great inventors in the world. Can you help me?–Sorry, I don’t know much about __________ topic.

___ research ___ the universe scientists have put a lot of information ___ computers. [ ]

If you don’t have enough money, I think you should _____ some _____ your friends.

Your bedroom is so dirty. Would you please _______, Peter?—OK, mum. I’ll do it right away.