By the time I joined Greener Group，they （义务打扫图书室） for 2 years．（volunteer）
She got into t________and needed help．So she asked the teacher for help．
—I have a t________and I can’t eat any food．
—Maybe you should see a dentist．
We are tired．So we are going to l________down and have a rest．
I took my temperature and found that I had a high f________．
—What’s the m________with you，young man?
—I have a bad cold．