16. —Have you understood what he really means?
—___________.
A. Now and then B.More or less C.From time to time D.Here and there
17. The heavy rain lasted 3 hours on end and came to end when the class was over.
A. an;an B. an;/ C./;an D./;/
18. He looked through the suits and selected the cheapest one for me. I ______.
A. put it out B. put it on C. took it off D. took it away
19 . It is so cold that you can’t go outside _____ fully covered in thick clothes.
A. if B. unless C. once D. when
20. —Please give me that book.
—______
—To have a look at it.
A. Here you are. B. What for? C. Really? D. What if?
