Running a company is not ______ a matter of hiring people ----they also need to be trained.

Mr. Brook didn’t come back at the usual time last night. ______, he met some friends and stayed out until midnight.

Although modem organic food has become very popular, many people can' t figure out the difference between organic foods and ______ grown foods．

 I know what we're doing is legal, but ____ it doesn't feel right.

I shall take you back to Beijing _____ you are well enough to travel.