把下列句子改成單數句或複數句 1.This is a tiger. 2.Those are eggs. 3.Is it a bottle? 4.Are these mice? 5.There is a sheep on the hill.

把下列句子改成單數句或複數句 1.This is a tiger. 2.Those are eggs. 3.Is it a bottle? 4.Are these mice? 5.There is a sheep on the hill.

1.These are tigers.
2.This is a egg.
3.Are they bottles?
4.Is this mouse?
5.There are sheep on the hill.