We all know that paper burns in _________ .
#34913
A
CO2
B
N2
C
O2
D
CO
推荐题目
_______should not be allowed to get ears pierced.
#34958
A
Twelve-year-old
B
Twelve-year-olds
C
Twelve years old
D
Twelve years olds
If you are ________about Australian cities，just read the book written by Dr. Johnson.
#18681
A
interested
B
anxious
C
upset
D
curious
Anyone with a college degree can apply for the job but those with _______ working experience are ______.
#19245
A
previous; preferred
B
precious; liked better
C
proper; enjoyed better
D
suitable; appreciated more
. People have always been_______about exactly how life on earth began.
#19892
A
curious
B
excited
C
anxious
D
careful
The children all looked _____ at the broken model plane and felt quite _____.
#20586
A
sad, sad
B
sadly, sadly
C
sad, sadly
D
sadly, sad