Last night, I was playing the piano_______ the doorbell rang.A. while B. when C. after
Daniel found _________ easy to make a bird cage with some wood.
—How many films did you watch last week? —_______.
If we keep _______the land, the farmers will have_______to live.
This is a _______zebra. It looks lovely.
As a result of my laziness ,I failed my work in time.