问题补充:
Our English teacher is ill, and we are all her health.
A. concerned about
B. careful of
C. grateful for
D. calm down
答案:
(答案→)A. concerned about
B. careful of
C. grateful for
D. calm down
解析:考查固定词组。Be concerned about…关心…;be careful of当心…;小心;be grateful for对…感激;calm down镇定;句意:我们的英语老师病了,我们都很担心他的健康。故A正确。