—Is this your pen? —Yes, __________.
#62677
A
this is
B
it is
C
it’s
D
it isn’t
推荐题目
——_________ should your robot need_________ batteries?——Every two months.
#62268
A
How soon, to be changed
B
How long, to change
C
How much, change
D
How often, to change
—________ have you been in this school?—For two years. 
#62123
A
How often
B
When
C
How soon
D
How long
You _______ go far if you need help with your homework.
#62238
A
don’t need
B
don’t have to
C
needn’t to
D
don’t have
___his classmates___his Maths teacher has gone hiking. You can’t find them at  school.
#61999
A
Both, and
B
Neither, nor
C
either, or
D
Not only, but also