Дополни предложение одним из вариантов (a,b,c), чтобы сделать их лексический правильными.

1. The pupils are in the _____. They are ready for the lesson.
a) class; b) classroom; b) classes;

2. Peter is _______ blackboard. He is answering his teacher's questions.
a) at the; b) on the; c) to the;

3. _______ some butter and jam on the bread.
a) Give; b) Take; c) Put;

4. There are ten boys and nine girls in my sister's ______.
a) classes; b) class; c) the classroom