Complete the sentences with the Future Perfect, Future Perfect Continuous or Present Simple forms of the verbs in brackets. Use full forms of the verbs.

Write 1–4 words in each gap.

By the time we [ ] (to arrive) at the party, all the guests [ ] (to come).

By Friday, they [ ] (to work) on this project for three weeks.

Mr Black [ ] (to teach) math for thirty years when he [ ] (to retire) next week.

I [ ] (to study) English for five years by September.