Mr. White as well as his friends ________ a number of countries in the past few years.
#86032
A
has travelled
B
have travelled
C
had travelled
D
travelled
推荐题目
When the teacher asks him, he always ____.
#43575
A
keep silent
B
keep silently
C
keeps silent
D
keeps silenty
--_____ of the population of the city _____workers? --About 60 percent. 
#86083
A
What; is
B
What; are
C
How much; is
D
How much; are