(A) No substitution required (B) had keep the camera on (C) have kept their cameras on (D) are keeping their camera on

While the online class was going on, they had to keep their cameras on.

English » Sentence Improvement

Select the most appropriate option that can substitute the underlined segment in the given sentence. If there is no need to substitute it, select ‘No substitution required’.

While the online class was going on, they had to keep their cameras on.

No substitution required

had keep the camera on

have kept their cameras on

are keeping their camera on

Solution

given sentence is correct and hence needs no improvement,

option A is therefore right here,

had to means something that is a compulsion and should be done compulsorily in past.