Один момент остается неясным. Write 2–4 words in each gap.

I'm busy next week at 3 o'clock. I
(to have) a tooth surgery.

Leo looks really smart. I think, he
 (to solve) this maths problem.

After finishing school, Dan
(to become) an artist.

I'm busy next week at 3 o'clock. I will have a tooth surgery.

Leo looks really smart. I think, he is able to solve this maths problem.

After finishing school, Dan is going to become an artist.