Question

4 Complete the sentences opening the brackets. 1 When I opened the door, the lesson (to begin) and theteacher (to explain) ... something to the class.7I to cleanthe cornet when the doncomo​

Answer 1

1. have begun

2. was explaining

Answer 2

1. When I opened the door, the lesson had begun and the teacher was explaining something to the class.

2. I was cleaning the cornet when the tornado came.