It is only ______ you understand what your parents do to you ______ you can improve your relationship with your parents.

Although the prices of TV set are , he managed to make the manager the price of that TV set

Smoking is harmful for health. It is in all parts of this building.

Since drinking water is a limited resource, we ________ let children know how precious it is, and teachthem to conserve it.[ ]

Have you got the tickets for the concert一Not yet，I didn’t realize difficult it was the tickets.