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
Seeing their teacher _______ into the classroom, they stopped _______ at once.
A．walk; telling B．entering; to speak
C．enter; to tell D．walking; talking
— I’m looking forward to _____my parents soon. What about you?
— Me too．
A．seeing B．see C．saw D．to see
Everyone may feel time____ very quickly when they do something interesting.
A．go by B．to go by
C．went by D．going by
