I am _____ about what I say because careless remarks are likely to hurt others' feelings.
#18693
A
enthusiastic
B
concerned
C
doubtful
D
cautious
推荐题目
 There were two boys in the lab,_____did the experiment successfully.
#20591
A
the clever of whom
B
the cleverer or whom
C
the clever of them
D
the more clever of them
Gui zhou Province is a place with quantities of    resources.
#19447
A
invisible
B
crystal clear
C
potential
D
rich