What are you looking for—I’m looking for something_________ I can use to cover the box.

We were swimming in the lake _______ suddenly the storm started.

－Listen! Someone is talking in the meeting room.－It________be Thomas. He has gone to Europe.

李明同学说话喜欢引经据典，在下面几种情境讲话时，他引用的古诗文恰当得体的一项是（ ）

Peter’s jacket looked just the same as Jack’s, but it cost ______his.