We’re all ready to put it into operation, ____________, we’re going to take action as fast as possible

re still very cautious about ________side effect the new medicine will bring about, although the experts have triedit on about 2000 patients

Engines are to machines ____ hearts are to animals

Alex and Tom are outgoing so _______ of them are afraid of speaking at the meeting.

8 We missed our train, and ___ the next train was delayed, ____ we had to wait for two hours