─             did they go to work last week ?     ─Once .
#70504
A
How many times
B
How often
C
How soon
D
How long
推荐题目
Jim never goes to the movies on Saturday, ________?
#68889
A
does Jim
B
doesn’t Jim
C
doesn’t he
D
does he
—     do you surf the Internet?—Once a week.
#70328
A
How
B
How old
C
How often
D
How many times