If someone ... (plays) loud music late at night, I ... (shall complain).
If you ... (had worked) hard, you would have passed your exam.
If he (had not robbed) the bank, the police (would not have arrested) him.
If people ... (did not drop) litter on beaches, our beaches would be much cleaner.
If Mary ... (had nto been) so busy then, she ... (would have gone) to the concert of her favourite group.
If you went there by bus, you ... (would get) there more quickly.
If I ... (see) John, I ... (will tell) him your news
If he ... (sees) her, she ... (will be) glad.
If you ... (had been) free, I ... (would have come) to see you that time.
If we asked her, I'm sure she ... (would stop) doing that.
If you ... (took) your bisycle, you would get there faster.
If people ... (stopped) using aerosols, it would help the environment.
If Veronika had walked to work, she ... (would not have been) so unfit.
If Steve (had had) time, he (would have helped) me. But he was very busy.
If he ... (had not come) in time, we ... (would have had) to wait for him.