It’s important ________English well.

When did you __________ the bike —– In 2012. I have__________ it for two years.

Will it be sunny this afternoon— It _______ fine. Who knows The weather (天气) always changes quickly.

The patient’s son asked the doctor the question________his father could survive the big operation. [ ]

I wonder whether the teacher is one of those who_______ to the mountain village to help the children there.