Выберите и вставьте правильный вариант. When he __ the answer, he usually puts up gis...

Question

Выберите и вставьте правильный вариант.
When he __ the answer, he usually puts up gis hand.
1) no
2) know
3) knows
4) didn't

Answer 1

When he __ the answer, he usually puts up his hand.
3) knows