He behaves quite well in school. It makes his father very .
A、nervous B、relax C、happy
Before we landed on the island, the aliens it into a sheep farm.
A、turn B、has turned C、had turned
People throw waste into the park every day and it a mountain of rubbish.
A、is turning off
B、has turned into
C、is put into
It’s important for everyone to the battle against pollution.
A、take part in B、play part in C、pay for
Too many cars on roads cause air pollution and it is for our health.
A、guly B、cruel C、harmful
When he his past three years, he realized he needed to work harder in senior high.
A、looked about
B、looked back at
C、looked forward to
