One of the most important questions they had to consider was ______ of public health.
--- Would you please tell me what time it is? --- It’s five minutes to nine ______ my watch.
Pleasant music is often played_____classes to make students refreshed and relaxed for a while.
Can’t you notice that there is little time left? Please tell me the whole thing _______.
Too bad—— I missed the early train ______ only a few minutes!
________ the numbers in employment,the hotel industry was the second largest industry in this country last year.