It may be necessary to stop（）(每隔一定時(shí)間) in the learning process and go back to the difficult points in the lessons.

The price of beer（）(從50美分到4美元不等) per liter during the summer season.

Some women （）(本來能夠掙一份很好的工資) in a job instead of staying home, but they decided not to work for the sale of the family.

It’s time（）(采取措施) about the traffic problem downtown.

His remarks left me （）(想知道他的真實(shí)目的).

By the time you get to New York, I（）(已經(jīng)動身去) London.

There’s a man at the reception desk who seems very angry and I think he means（）(想找麻煩).

When I was very young, I was terribly frightened of school, but I soon（）(克服了這種心理).

Most doctors recognize that medicine is as much（）(是一門科學(xué)，也是一門藝術(shù)).

（）(正是由于她太沒有經(jīng)驗(yàn)) that she does not know how to deal with the situation.