4. Hearing the sound of rain, Helen woke up and closed all the windows to prevent the rain from ________ in.
(A)creeping (B) flocking (C) knitting (D) pouring
23. At Costco, if you are not satisfied with the product you buy, you get return it ____ a month and get
your money back.
(A) on (B) within (C) about (D) without
20. The actor _____ in Hollywood years ago, featuring in major movies, if he had not been bothered by his
drug problems.
(A) would have been
(B) would be
(C) will have been
(D) will be