use；recycle；napkin；take；ride

（1）In Ningbo，everyone knows that things in blue rubbish bins can be

recycled

recycled

.
（2）The waitress dried her sweat with a paper

napkin

napkin

.
（3）Earlier this year，about 150 individuals

have taken

have taken

part in the training.
（4）My grandfather

used

used

to take a walk after supper.
（5）To reduce air pollution，we should stop

riding

riding

in cars if we don't have to.