Whether dying patientsbe helped to end their lives is a tough moral question.

The officials said the downward trend of A/H1N1 flu activity did not______ mean the worst was over. Flu activity might pick up next year.

He doesn’t make ________ clear why he wants another job when he has a good one .[ ]

I haven’t seen the interesting movie Let the Bullet（子弹）Fly.— _________ .

The year 1949 ________ the birth of a new country — the People’s Republic of China.