1 . 在他旁边的是我妈妈。
________ ________ ________ is my mum.

2 .
1. There are 40 students desks in the room.
教室里有30名学生。
→______________________________________________________
2. A teacher’s desk is in front of the blackboard.
一把椅子在书桌的旁边。
→______________________________________________________
3. Are there any lockers in the classroom?
厨房里有一些勺子吗？
→______________________________________________________

3 . —Why can’t Mary see the blackboard?
—Because a boy sits ________ her, and he is very tall.

A．behind

B．next to

C．across from

D．in front of