How are you today, Bill— I’m feeling much _______ today. I don’t think the medicine(药) works.

Scientists still wonder ______ cloning will help or harm us and _____ it is leading us.

You can’t imagine ____ when they receivedthese nice Christmas presents.

The girl is beautiful, ____ she’s a little shy.

The Canadian friends from our school have given us a lot of books, few of ________ a bit difficult for us Chinese students. [ ]