Carl is studying________food science at college and hopes to open up________meat processing factory of his own one day. (2012·安徽,21)
I can’t imagine _____that with such a famous author.
She pretended ________the letter I wrote the day before yesterday.
Our father often told us in the past that _____is believing.
Is______necessary to change trains at Beijing?
When and where to build the new power station ______ yet.