-- It’s a pity that you missed the lecture on nuclear pollution. -- I _________ it, but I was busy preparing for a job interview.
Rather than _______ on a crowded bus, he always prefers _______ a bicycle.
_______a reply, he decided to write again.
There seemed nothing else to do but ______ a doctor.
Hearing the _______ news, we all felt_______ .
_______the road, be careful.