My friend does one thing one day and just the ________the next. His behavior is inconsistent.[ ]

Not a single song ________ at yesterday’s party.

We decided not to climb the mountain because it was raining____.

With the opening of the Qinghai-Tibet Railway, more and more people have chosen to travel Tibet, because it hasa(n) _____natural landscape. [ ]

He is still quite sick, but the doctor is sure that he will___________.