In the question below select the option (A-D) that best explains the information conveyed in the sentence:
He can't be swimming all day
A
it's possible he is not swimming now
B
It's very likely he is swimming now
C
He does not have the ability to swim all day
D
He would not like to swim all day
Verified Correct Answer: A.
Grammar & Contextual Explanation
The sentence "He can't be swimming all day" suggests doubt or disbelief that he has been swimming continuously for the entire day. The use of "can't be" implies that the speaker finds it unlikely or impossible that he has been swimming all day.
Source: Myschool Past Questions Archive (Record #7110)