Eric nearly always wins the science award.That’s because his projects are ___.

When did Mr Green arrive in London—He arrived there the evening of December 6th.

He reads newspapers every day to keephimself _______ about what’s going on in the world

Mary can not only speak Japanese but also ______ .

Will you take a plane or train to Yunnan—By air. I will have to _______ more money, but it will _______ much less time.