Unfortunately, it rained for two weeks, which completely _______ our plan.
A. ruined B. harmed C. crashed D. attacked
It is really _____ useful dictionary, ______ dictionary every one of us needs．
A. an, a B. a, the C. the, a D. a, a
Economic growth in the world remains weak throughout 2013 and it is hoped that it will
gradually in 2014.
A. break up B. make out C. work out D. pick up
One of our rules is that every student wear the school uniform while at school.
A. might B. could C. shall D. will
The workers insist that the company should take measures to improve their working condition.
A. attractive B. effective C. impressive D. conservative
If unsolved, the problem of food safety may lead to more serious results.
A. having left B. to leave C. left D. leaving
