(2012·武汉高二检测) As a teacher rich in experience, he knows how to _______ his ideas to these new students in a limited period of time.
We are bound to solve the present severe problem, ________ we act intelligently and promptly.
— David, how is your new job? — ________ the salary, it’s not bad.
It is well known that too much ________ to the sun can promote the development of many skin cancers.
I recommend you _______ the new restaurant on the corner; the food is excellent.
Bacteria do not develop at low temperature, so that food can be _______ in cold storage.