根据句意及首字母提示完成单词

小题1:We went to a summer c______ last year.

小题2:There w______ many trees on the mountains five years ago(以前).

小题3:We are studying hard for e______.

小题4:—He was an English teacher.

—R______?  Did he teach you?

小题5:What an a______ classroom!  It’s too dirty!

患病老年人用药时要注意（）。

A、谨慎用药

B、药物剂量要小

C、观察用药反应

D、少量饮水