Используйте passive voice в предложениях
1) they will be examining the students of group 3 at 12 o’clock
2) they had not finished the work by noon
3) who has broken this glass?
4) they have already sent for the doctor, haven’t they ?
5) he has secretly been admiring her for a long time
6) can we use the club-room as a meeting-place?
7) we must lose no time in finding him
8) they may deliver the letter tomorrow
9) we have to help him in every possible way
10) i cannot write the letter unless i have all the information
11)petrov is to finish his work today
12) are they going to deliver the goods tomorrow?