Question

Complete the sentence using the most appropriate option:

Look. Jack is putting on his hat and coat. He ................... out.

• A. must be going
• B. will be going
• C. can be going
• D. could be going

Answer 1

Answer: (A)

'Will' indicates promise / voluntary action;

'Must' indicates compulsion / surety;

'Could' indicates ability in the past / possibility ;

'Can' indicates ability / capacity / permission;

Here, surety is mentioned about Jack;

Therefore, the correct option as per the situation of the sentence is:

B: must be going

(must indicates - surety; and be going indicate tense - present continuous)