In that traffic accident last night the man who hit five people in a row had drunk so much that he could no longer_______ between fantasy and reality.

It might __ reasonable to start the meeting at 4:30.

We began to open to the outside world in the ate 1970s.        ,  there have been great changes in the country.

The newcomers still don’t know ________ the difficult situation after practicing for 2 months.

 It’s reported that most of the lakes and damaged dams were safe but the risks of heavy rain and aftershocks ________.