Mary, can you take good care of ________ while I’m not at home?— Of course, I can.

______ came that Prime Minister David Cameron（卡梅伦首相） blamed the worst riots（骚乱）in Britain the other day.

.______ pressure the U.S. government put on the Chinese government, China would stick to its own policy of exchange rate.

The No. 6 Middle School is not far_____ his home. [ ]

It was a serious mistake, ______ caused by carelessness.