Choose the correct forms of the verbs in the mixed conditional sentences.

Choose the correct option.

If my father [went|had gone|would have gone|would go] to medical school thirty years ago, he would be a doctor now.

What [would he have been doing|had he been doing|was he doing|would he be doing] now if he had not been at the university?

If she had been told about the lecture yesterday, she [would come|would have come|had come|came] today.

If Leo had tried harder, he [would have been|had been|would be|were] successful today.