这六题目该怎么选择呢?
15. No sooner ______ than the telephone rang.
A. had I lain down B. I had lain down C. had I lay down D. I had lay down
16. It was ______ I came to visit ______ I knew what kind of county she is.
A. until … when B. until … that C. not until … when D. not until … that
17. By using both ears one can tell the direction ______ a sound comes.
A. that B. from which C. when D. to which
18. Edward was the boy ______ teachers thought won the contest
A. who B. whom C. those D. that
19. I had trouble with my car this morning, but I finally managed ______.
A. to get starting it B. getting stared it
C. to get it started D. getting it started
20. I think the house is big enough ______. (01’---21)
A. to live in B. live C. to live D. living