The pipes have oil or water inside them, which is heated and sent to the storage tank until ______ to produce electricity.
A. needed B. needing
C. to need D. having needed
According to the national population survey concluded recently, Florida is home to the largest population of people aged 65 and older, and this group ______ over 17 percent of the state’s population.
A. takes up B. holds up
C. makes up D. keeps up
People with simple names enjoy quicker career advancement because names which are hard to pronounce inspire negative _______ from superiors.
A. consideration B. consequences
C. expectations D. reactions
In South-East Asia, many farmers cannot afford _____ farm equipment such as tractors, so most of the work is done with human labour.
A. considerate B. conventional
C. confidential D. correctional
The first thing you must remember is that in order to succeed, it is almost compulsory that you ______ optimistic.
A. be B. are C. must be D. have been
It was not until I was chosen monitor of the class ______ to realize the importance of teamwork.
A. did I come B. had I come
C. when I come D. that I came
