－Could you please help me check what's wrong?
－Sorry, I don't have much _______of the computer.
A. introduction B. development C. knowledge D. information
－Why does the river smell terrible? －Because the water_______.
A. was polluted B. has been polluted C. will be polluted D. has polluted
一Have you read today's morning paper?
－Not _______. What's the latest news?
A. only B. yet C. ever D. just
－How about the pollution in the countryside?
－Luckily, it's not as serious as _______ in the big cities.
A. that B. it C. one D. those
They had to operate _______his arm because it was broken in two places.
A. with B. / C. at D. on
－It was _______ great fun to be a host, wasn't?
－Yes. That's _______ experience hard to forget.
A.／; an B. a; an C.; the D. a; the
