Question

4) After the teacher ... a new rule, the pupils started doing exercises. a) has explained b) explained c) had explained d) was explaining
(Пожалуйста помогите) ​

Answer 1

Відповідь:

After the teacher was explaining a new rule, the pupils started doing exercises.

Пояснення:

Answer 2

Ответ:

After the teacher had explained a new rule,the pupils started doing exercises