Scientists are increasely _____ that the earth is getting hotter because of carbon dioxide and other gases.
#17716
A
content
B
conscious
C
convinced
D
common
推荐题目
Over the river there is ____________ bridge.
#34875
A
a 110-meter- long
B
a 110-meters- long
C
an 110-meter- long
D
an 110-meters- long
The salesman showed her several MP3s and she chose ________ one as she didn't want to spend too much money on it.
#17769
A
the less expensive
B
less expensive
C
the least expensive
D
least expensive
Oh, boy, why are you just playing games all day? Can't you find something ______ doing at all?
#18459
A
practical    
B
valuab1e
C
worth    
D
positive