What is the work done when a force of 20 N moves an

Choose the option which correctly identifies the tense of the given sentence.

She was singing when the guests arrived.

Choose the option which correctly identifies the tense of the given sentence.

Were they watching TV when the power went out?

A surreal experience had be unfolded (A)/ at the near-empty Padmapukur  (B)/flat of  Mrinal Sen on(C)/  his first death anniversary./(D)

Choose the option which correctly identifies the tense of the given sentence.

Aren't they going to meet you soon?

Choose the option which correctly identifies the tense of the given sentence.

Will you be working late tomorrow night?

Choose the option which correctly identifies the tense of the given sentence.

He had been studying all night before the exam.

Choose the option which correctly identifies the tense of the given sentence.

They have been working here for two years.

Choose the option which correctly identifies the tense of the given sentence.

She had already left before we reached.

There was some letter exchanges (A)/that Kunal was personally annotating (B)/ before he could distribute them as well.(C)/ No error (D)