1. The room is
messy
and
dirty
. To
make
it clean, we can
sweep
the floor. We can also
clean
the tables.
2. Smoke
from
factories
makes
the air dirty. We can
plant
more trees to
keep
the
air
clean.
答案：1. messy, dirty, make, sweep, clean 2. from, makes, plant, keep, air
一、听录音,选择合适的答句。(听两遍)
(
B
) 1. A. Yes, you can. B. Yes, we can.
(
B
) 2. A. It means you can't smoke here. B. They mean you can't smoke here.
(
B
) 3. A. That's OK. B. OK.
(
A
) 4. A. He is looking for the bananas. B. He gives Sam the bananas.
(
B
) 5. A. We can plant more trees. B. We can sweep the floor and clean the desks.
答案：1. B 2. B 3. B 4. A 5. B
二、听录音,完成对话。(听两遍)
Miss Li and her students are
having
an English lesson now. There are some old pictures of their
city
on the blackboard.
Miss Li: What
made
our city dirty?
Su Hai: Smoke from cars and
factories
made the
air
dirty.
Liu Tao:
Rubbish
made the street
messy
and dirty.
Miss Li: We can do
many
things to
keep
our city clean.
答案：having, city, made, factories, air, Rubbish, messy, many, keep
