My grandpa is very old, but he is_________.[ ]

I was not good at math, so my friend helped me _____ it last night. [ ]

It’s already half past seven. You ________ get up quickly.

What a mess(杂乱)! Tony, you should ___________ your things to keep the room clean.—OK, Mum! I’ll do it at once.

The life in an American school is not the same __________ that in a Chinese school. They are different __________ each other.[ ]