---What is our earth like ________from the moon? ---Well, our earth, with water ________ 70% of its surface, appears as a "blue ball".
It is the teacher _____taught me when I was a child _____ I’m going to visit.
Nancy was very disappointed to hear the news. I wish I her about that.
, I got better and returned to work.
He was very busy yesterday;otherwise,he ______ to the meeting.
—How about Christmas evening party? —I should say it was success.