Complete the dialogue with the correct forms of the verbs in brackets. Don't use contractions.

Write 1–3 words in each gap.

Liza: If I had paid more attention in class, I [ ] (to understand) this material better.

Mark: Well, if you [ ] (to need) help, I can tutor you. If we start now, you might grasp the concepts before the exam.

Liza: That would be great. If you **** explain the material in a different way, I [ ] (to understand) it better.

Mark: And if you [ ] (to have) any questions along the way, don't hesitate to ask. We'll make sure you pass that test.