____ were all very tired, but none of ____ would stop to take a rest.
There will be less_______ and the environment will be better. A. trees B. pollution C. factories
Tom ran _______ Sam. They are both winners.A. as quickly asB. as quick asC. so quickly as
—_______ does Mary surf the Internet? — Every day. A. How long B. How many C. How often
Mr. Li is one of _______ best engineers in this factory. A. the B. an C. A
There ______ a soccer game in our school tomorrow afternoon.