Seeing an old man get on the crowded bus, Li Hong stood up at once and ______ her seat to him.

I am not sure if youin the exam, but you will be better if youharder.

My mother and I will go to Shanghai this summer. 　　—______. Shall we go together?

Will Jim go hiking with us this weekend?— Maybe not. He _______ to visit his grandpa in the country.

Bill is ___________ classmate. He is a friend of ____________, too.