Question

Глагол в правильной форме
1) I (to wait) for him since 2 p.m.
2) They (to have) dinner when the phone (to ring)
3) Our schoolchildren (to take part) in the conference last year
4) The president (to elect) for the period of 4 years
5) He (to return) bythe time we are here
6) She said they (to be) hungry after their trip yesterday
7) The form (to fill) by them was done in the wrong way

Answer 1

1.I have been waiting
2.were having..rang
3.took part
4.is elected
5.will have returned
6.had been 
7.filled