The biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them.

My pain ___________ obvious the moment I walked into the room, for the first man I met  asked me pitifully:" Are you feeling all right?"

I must go there earlier. John has suggested that I _____an hour before the discussion begins.

My parents insisted that I _____ medicine instead of law. 

Without electricity human life __________ quite different today.