_________ cleans the classroom can go home first.

I can ________  swim _______ skate. Will you please teach me?

I am ________ worried about y parents’ healthy conditions.

He can’t tell us ________, I think.

One should keep ________ promise.

Is there ________you want to say?

These two books are very interesting. You can choose _________ of them.

He said ______ at the meeting and just sat there silently.

------ When shall we meet again?
------ Make it ______day you like. It’s all the same to me.

The population of China is much large than ______
this        B.those          C.it                      D.that