1 . 选择方框内的词或短语完成下列句子

so far，step by step，a mystery，the author’s new book，pleasant enough， very carefully，brave enough，the new student，obviously，older than

1. Her husband，who is____________ her，is a bank manager.
2. ___________，you’d been in the water for quite some time.
3. He found _______________ sitting in the corner of the classroom a very attentive boy.
4. Students____________ to attempt this course deserve to succeed.
5. We drove ____________.
6. The weather was _________________.
7. ________________ is more than worth reading.
8. It’s ____________ how the prisoner escaped.
9. The machine can’t be made perfect overnight；in fact，it should be improved ____________.
10. The old couple haven’t heard from their son ___________.