Выберите правильный вариант ответа
1. You will not be able to speak English unless you... hard at it.
a) will work b) work c) don't work d) won't work
2. I ... the Browns all my life.
a) know b) knew c) have known d) had known
3. He said he ... us during the weekend.
a) visited b) would visit c) will visit d) visit