Question

【题目】—What do you think of the robots in the future?
—I think they won't __________ do all the work like humans.
A.can
B.like
C.able to
D.be able to

Answer 1

【答案】D
【解析】考查固定搭配 be able to do(能够做某事)，can（能；会）只能用于一般现在时和一般过去时；be able to （能；会）能用于各种时态，句中时态为将来时，故选D 。