Bobby
throws
a banana
skin
on the ground. He likes
eating
bananas. Tina is very angry. She says, "Bobby, you
can't
do that.
Pick
it
up
, please. It
makes
the street
messy
and
dirty
."
答案：throws, skin, eating, can't, Pick, up, makes, messy, dirty
1. Rubbish
made
the river
dirty
many years ago.
2. There is rubbish on the ground. Please
pick
it
up
and then
put
it
in
the bin.
3. To
keep
our classroom
clean
, we sweep the floor every day.
4. My brother always
helps
me
with
my English.
答案：1. made, dirty 2. pick, up, put, in 3. keep, clean 4. helps, with
1. Sam slips on those
banana skins
and
falls
.
2. What can we do
to help
him?
3. We should
put
rubbish in the bins
to keep
the park clean.
4. Some clothes
make
the bed messy.
5. There
is
rubbish in the street.
6. He helps
(to) clean
the desks.
7. Bobby likes
living
in the city.
答案：1. banana skins, falls 2. to help 3. put, to keep 4. make 5. is 6. (to) clean 7. living
1. Black smoke from f
factories
makes the air d
dirty
.
2. Mike went to the Palace M
Museum
for the holiday.
3. Your i
ideas
are good.
4. The dirty water makes the fish d
dead
.
5. To k
keep
the classroom clean, we can s
sweep
the floor. We can't throw r
rubbish
on the f
floor
.
6. We can take the m
metro
to school.
答案：1. factories, dirty 2. Museum 3. ideas 4. dead 5. keep, sweep, rubbish, floor 6. metro
