—Mum, have you seen my U-Disk?—_______ you bought last Sunday? I'm-afraid I haven't seen _______.
The traffic on the main streets has a longer green signal than _______ on the small ones.
—Shall we go for a drink at one o’clock this afternoon? —_______. Will two o’clock be OK?
Because of the financial crisis, days are gone ________ local 5-star hotels charged 6000 yuan.
The meeting ________ a few weeks after he had arrived in America.
________ is no possibility ________Bob can win first prize in the contest.