—Shall I attend my friend's comingofage ceremony, Mum?—No, unless you see to ________ that you will be home before 10:00 P.M.
Jack has three sons, and both of _______ are studying in China.
--- What is the price of petrol these days? --- Oh, it _______ sharply since last month.
The old lady was so pleased with all _______ we had done for her _______ she wrote us a thank-you letter.
--- What do you think of the movie Avatar? --- Interesting. It is _______ again.
She has little chance of getting the job, for _______ people have applied for it.