Question

Раскройте скобки: 1. Here is the bus. How long you (to wait) for it? 2. When I (to leave) the last conference the ecological problems (to discuss) 3. I'm sure she (to be) here in an hour.

Answer 1

Were you waiting, left, were being discussed, will be

Answer 2

1. Here is the bus. How long have you been waiting for it? 2. When I left the last conference, the ecological problems were being discussed. 3. I'm sure she will be here in an hour.