Воткните верный вариант ответа (заместо пропусков __ ) ПОМОГИТЕ ПОЖАЛУЙСТА 1.

Воткните верный вариант ответа (заместо пропусков __ ) ПОМОГИТЕ ПОЖАЛУЙСТА
1. We __ when somebody __ at the door.
a) were talking/was knocking
b) had been talking/knocked
2. Sasha __at the factory long when he __ a manager.
a) had been мейд/had been working
b) had been working/мейд
3. Sally __for two years when she __ the race.
a) trained/entered
b) had trained/had entered
c) had been training/entered
4. It __ and the ground __ white.
a) had been snowing/was
b) had snowed/was
5. By this death, the composer __
a) had written
b) was writing
c) had been writing.