Are you firmly against any independence move by Taiwan?—Of course. That’s ________ our basic interest lies.

Fifty dollars for such a T-shirt! You _______ be joking!—I’m serious．It’s made of silk.

I had some problems _____ my homework.

Simon has gone abroad to have ____________ European tour.— Oh, really? It must be ____________ unusual trip for him.

____willyoustayinAmerica?—Abouttwomonths.[ ]