Doctor, it seems you like to work with animals.—Yes, I think animals should as our friends.

rought situation has been severe these days．— If it had rained even a drop, things would be muchbetter now and many crops ____．

The directions for operating this machine were so______ that we could not understand.

He commanded that he students _____ the classroom before he returned.[ ]

My father knows a lot about American culture, for he _____ there for 2 years, and then he returned home.