The best way to explore _______ countryside is on _______foot.
She ______ stop whomever she met to tell the story about her Ah Mao.
______, his idea was actually worth practicing.
. He had already learned the news. I ______ the trouble to phone him about it.
The managers discussed the plan that they would like to see ______ the next year.
-- It’s thirty years since we last met.--- But I still remember the story, believe it or not, ______ we got lost on a rainy night.