(2013·苏南四校3月联考)Everybody knows about it now! But no one knows ________ once prevented the rumor from spreading.
A．what was it that B．what it was that
C．how it was that D．why it was that
(2013·吉林一中二模)Programs，________to join the old and the young together, are growing in popularity all over the world.
A．designed B．to be designed
C．designing D．having designed
(2013·成都外国语月考)________， the pay isn't attractive enough, though the job itself is quite interesting.
A．Generally speaking B．On the contrary
C．In particular D．To be honest
(2013·厦门质检)Hardly ________ twelve when they realized that it was too late to catch the last train.
A．the clock had struck
B．the clock had been struck
C．had the clock been struck
D．had the clock struck
(2013·合肥一检)According to the rules and regulations, all payments ________ be made in cash in the shopping center.
A．shall B．can
C．must D．should
(2013·枣庄三中阶段测试)—I'm really angry at Tom. He never listens to me.
—________， Ellen. Things will work out.
A．Don't mention it B．I don't think so
C．Take it easy D．No problem
