Помогите вставить предлоги! We often answer_____our teacher`s questions____ the lessons....

Question

Помогите вставить предлоги!
We often answer_____our teacher`s questions____ the lessons.
2.Sometimes they translate instructions ______ Russian_____English
3.Did you learn the poem _____heart yesterday?

Answer 1

1.We often answer our teacher`s questions at the lessons. 
2.Sometimes they translate instructions from Russian into English 
3.Did you learn the poem by heart yesterday?

Answer 2

1. -, on (первое - пропуск)

2. from, into

3. by