1. A friend of m         told me a story about an old scientist,
2. I can't i        what has happened.
3.It is their c        to give thanks to God for the harvest.
4. You should always be t        to your parents for giving you a good education.
5. The children could h       answer those questions which the foreigner asked.
6. She w          what they had to be thankful for.
7. The children looked f       to going on a picnic for a long time.
8. Every student must h        in their homework after they get to school.
9. We want to r        our children to be decent (正派的) men and women.
10. My sister is w         in swimming,so she has to practice it.
11. Mr Smith was fairly b         himself with joy.
12. We said things would turn out well,and sure e       they did.