How kind you are! You always do what you can ______ others.
A．help B．helping
C．helps D．to help
—Would you mind_____the window? It's very hot.
—No, not at all.
A．open B．to open
C．opening D．to opening
You look too tired. Why not______a rest?
A．stop to have B．to stop having
C．stop having D．to stop having
At times, parents find it difficult ________ with their teenage children
A．talk B．talked
C．talking D．to talk
I'm sleepy. I prefer ________ at home to going out for a walk.
A．sleeping B．to sleep
C．slept D．sleep
The retired couple enjoy_____photos.They always go out with their cameras
A．take B．took
C．to take D．taking
