If you want to do international trade successfully, ______ of English is _______. 
#6370
A
good command; a must
B
a good command; a need
C
a good command; a must
D
good command; must
推荐题目
The _______ are ten to one that we’ll win the match.
#7150
A
opportunities
B
possibility
C
chances
D
ability
His latest research is at the   of genetic science. 
#5898
A
maiden voyage
B
cutting edge
C
focus group
D
daily basis
A dark cloud is a ________ of thunderstorm.
#6254
A
symbol
B
sign
C
mark
D
signal