— Don’t smoke any more. It’s bad for your health.— I am trying to . It’s really hard , you know.
I’ll return the book to the library as soon as I________it .
________ is good for your health.
—Are there any trees on _____ sides of the new street? —Yes, there are.
While I _____ my homework in my room, my mother _____ in the kitchen.
We ____ _each other since I left Shanghai.