【单选题】
This machine is extremely （ ） because it runs on half-price electricity.
①
economic
②
economical
③
economy
④
economist
【单选题】
Once ____, this power station will supply all the
neighboring towns and villages with electricity.
①
it being completed
②
it completed
③
completed
④
it completes
【单选题】
Once _____, this power station will supply all the neighboring towns and villages with electricity.
①
it being completed
②
it completed
③
completed
④
it completes
【单选题】
To _________ their new shampoo, they are selling it at half price for a month.
①
progress
②
proceed
③
promote
④
propose
【单选题】
Jane is in a hurry because the train to the airport leaves ______ half an hour.
①
by
②
in
③
for
④
until
【单选题】
The power station____________ its supply of electricity day and night.
①
misunderstands
②
maintains
③
measures
④
masters
【单选题】
2. This machine is ______ being improved.
①
capable to
②
able of
③
able to
④
capable of
【单选题】
Since the matter was extremely _____, we dealt with it immediately.
①
tough
②
tense
③
urgent
④
instant