Question

Exercise 2. Choose the one variant that best completes the sentence.

We (just/talk) about him when he suddenly (come) in.
a) just talked a) came in
b) were just talking b) was coming in

A man (be) unconscious for a few minutes when the ambulance arrived.
a) was b) had been c) had being

I (talk) over the phone a whole hour when the porter knocked at the door.
a) talked b) had talked
c) had been talking d) was talking​

Answer 1

We were just talking about him when he suddenly came in.

b) were just talking,  a) came in

A man had been unconscious for a few minutes when the ambulance arrived.

b) had been

I had been talking over the phone a whole hour when the porter knocked at the door.

c) had been talking