In which part of the play is it　　　　Lily will play a role?

We’re going to buy a new house _____ two years.[ ]

Can you help me _________ this cat? I go to my grandparents’ home this afternoon.—OK.

Mr.Li, I can’t understand everything in class.——–Don’t worry ! I’ll _________ the main points at the end.

a year does your school have sports meetings?—Twice a year.