The river near our school has become clean again as new measures have been __________ to prevent it __________ any further.
Although it was not named ________ 1782, this kind of metal was used as early as 5300 BC.A.in B.for C.until D.since
--Who is late for class again? --________ you ask? Tim, of course.
--Shall I give you a ride to the Capital Airport? --Thank you.________.
--Kathy and her sister are so alike. --Yeah, I can’t tell one from ________.
The largest ever ________ 16th Asian Games is ________ huge success and the best ever in history.