An unusual Halloween party, an annual event in Boulder, Colorado, ____is known as the Naked Pumpkin Run, caused trouble.
A．what B．that C．it D．which
–What’s troubling him? ______did Jim look quiet with his friends around.
--He’s considering a new project in his company.
A．How B．Why C．Fairly D．Seldom
Vaccination(接种疫苗) against A H1/N1 flu will begin across Britain next week, _____a sharp increase in the death cases.
A．to follow B．followed C．following D．follows
It’s believed ______40% of stars, like the sun, may have planets that orbit them.
A．as many as B．as much as C．many more D．much more
A scientific report has found that snow and ice on Africa’s highest mountain Kilimanjaro ______rapidly and could vanish within 20 years.
A．has been melted B．will melt
C．is melting D．was being melted
–Frank failed the driving test again.
--______ He practiced a lot and was quite confident.
A．What if? B．How come? C．So what? D．Why not?
