根据句义完成句中已给出首字母的单词。
小题1:
Nobody taught her French . She learned it by h__________>
小题2:
In the US, 13 is an u_________ number.
小题3:
This new car b_____ to my brother. He bought it last week.
小题4:
He spoke so fast that we couldn’t hear him c__________.
小题5:
Here’s a card for you with our best w_________.