Mike will go abroad tomorrow. I am going to _____ at the airport.A. sent him offB. see him offC. saw him off
Bob doesn’t know _____ to write about.
We must be strict _____ ourselves and strict _____ our work.
Now more and more people prefer_ _to_ _in order to reduce the air pollution.
They would rather___colours like orange or yellow than blue or white.
Do you like ____ books ?