_______ is known to all is _______ Diaoyu Island is part of China.

I haven’t got the reference book yet, but I’ll have a test on the subject next month.—Don’t worry. You ______ have it by Tuesday.

Sorry, sir. I made a mistake again.—______. Practice more and you will do better.

_________ the floor, I found his pen lyingon the ground.

We are not allowed _____ outdoors with some other children. [ ]