Don't be late__schoolBe careful__the dog.I often help my brother __his English.用适当的介词填空.

Don't be late__schoolBe careful__the dog.I often help my brother __his English.用适当的介词填空.
Don't be late__school
Be careful__the dog.I often help my brother __his English.用适当的介词填空.

Don't be late__schoolBe careful__the dog.I often help my brother __his English.用适当的介词填空.
don't be late for school
be careful with the dog.i often help my brother with his english

Don't be late to school
Be careful for the dog.I often help my brother with his English.