_the girl is playing the piano!括号里填什么 有How well what good How 和What
还有When Mary was young,she ___ able to dance very well.
could be can be was could
I'm glad___
hear from you to hear from you hear a letter from you to hear a letter from you
-———— does your father come to see you Twice a month.
How often How long How soon How far
（问题下面的是可供选择的答案）