初中英语状语从句单选题

I don’t know if mum            a gift for me．If she             one, I will be very happy．

A．buys; buys	B．buys; will buy
C．will buy; buys	D．will buy; will buy

If people ________ cutting down the forest, they will have nowhere _______.

A．keep, to live in

B．will keep, to live in

C．keep, to live

D．will keep, to live

—Our holiday in Beijing cost a lot of money.
—Did it? Well, that doesn’t matter ______ you enjoyed yourselves

A．if

B．unless

C．while

D．or