измените время сказуемого на past Progressive. 1)she is reading a Book now.2) They are playning football now. 3)The teacher is explaing a New rule now.4)l am coughing and snezing niw

Это легко:

is меняем на was, are - на were, вместо now пишем  then или  at that time

1) She was reading a book then.

2) They were playing football at that time.

3) The teacher was explaining a new rule then.

4) l was coughing and sneezing at that time.