Gun control is a subject __________ Americans have argued for a long time.
| A．of which | B．with which | C．about which | D．into which |
The idea puzzled me so much that I stopped for a few seconds to try to _______.
| A．make it out | B．make it off | C．make it up | D．make it over |
One of the walls of the reading--room should be painted yellow, and ______.
A. the other is white B. the others white
C. the other white D, another is white
-- You know who came to our school yesterday?
-- Professor Smith? We once met at a conference.
-- ______. He came and gave a wonderful speech.
| A．How did you know that? | B．That was good news. |
| C．Got it! | D．Well Done! |
-- Do you enjoy ______ here?
-- Oh, yes, the air, the green hill, the thickly trees. Everything is so attractive.
| A．it | B．these | C．them | D．those |
--Does he always keep an appointment, Jenny'?
-- Seldom, ______.
| A．if any | B．whenever possible | C．if ever | D．when necessary |