our duty        some housework at home
#48790
A
It’s ;to do
B
It’s ;doing
C
That’s;doing
D
That’s; to do
推荐题目
My teacher used to _______ a bike to school, but now he is used to ________ a car to work.
#50647
A
ride, driving 
B
ride, drive
C
riding, drive
D
riding, driving
You should move back and forth while _______ basketball.
#50269
A
to play
B
playing
C
are playing
D
plays
How long do you often spend _______ this book , boys? 
#49038
A
reads
B
to be read
C
to reading
D
reading