— ______ does Tom surf the Internet ? —Twice a week .      
#70510
A
How much
B
How many
C
How long
D
How often
推荐题目
The traffic accident _____ last Sunday morning.
#70117
A
was happened
B
happened
C
had happened
D
happening
It is now 11:30 pm, so there are few people and buses on the street, ____________ ?
#69740
A
aren’t there
B
are they
C
aren’t they
D
are there
His friend found______________ to tell him the truth . 
#70243
A
that was necessary
B
necessary
C
it’s necessary
D
it necessary