Robots _______ do housework instead of people in the future.
#51958
A
will be able to
B
will can
C
could
D
were able to
推荐题目
 I ________ $300 for the bike. 
#52647
A
took
B
spent
C
cost
D
paid
You must ______the English course one month before it begins.
#52505
A
pay for
B
paid for
C
be paid for
D
be spent on
There__________ large areas of rice fields in our hometown.
#53010
A
used to have
B
used to be
C
was used to having
D
was used to being