Don’t give up, my children. Keep ________ and you will be successful.—Thank you, Mr. Wang. We’ll try our best.

It is said that many kids are worried about the year 2012, ____they think the earth will be destroyedby disasters [ ]

下列词语没有错别字的一组是（ ）

I’m not happy， because I argued ______my best friend ______the gift.

Is this her room—No. _______ is on the _______ floor.