—What would you buy for your mother’s birthday as a present? —I am not sure.Anyway, I will buy _________ to make her happy.
---- why not swim in the river? ---oh, no. our teacher told us _____ here. It’s dangerous.
I can’t swim. And she can’t, _______.
I was doing my homework _______ a dog came in.
—Marycan’thelp___thehouse.Why?—Becausesheisbusy____ahotelreservation.
It is about _______by bus from here to Harbin.