My father________for the car factory since 1995.
A.worked
B.was working
C.has worked
D.is working

I have painted my bedroom wall three times, but I can still see the old colour underneath.
A.The original colour of my bedroom wall is still visible despite 3 times of painting.
B.Can you see the first colour of the bedroom wall after I painted it the third time?
C.The original colour of my bedroom wall is invisible after I painted it the third time.
D.Three times of painting makes my bedroom wall come back to its colour underneath.

They have been trying to sell their house before, but no one is interested.
A.They don’t want to sell the house any more.
B.No one in the family is interested in buying and selling houses
C.No one wants to buy their house.
D.No one in the family really wanted to sell the house.

According to the writer, plastic pollution is caused by _______.
A.people's busy and throw-away lifestyle
B.the amount of rubbish generated by people
C.the increasing amount of waste build-up
D.harmful and toxic elements of plastic

The word formidable in paragraph 2 is closest in meaning to ________.
A.compared
B.measured
C.friendly
D.enormous

The word it in paragraph 7 refers to ________.
A.plastic waste
B.impact
C.environment
D.planet

In the last paragraph, "spread it like wildfire" implies that people should _________.
A.show interest and act very quickly
B.provide a quick solution to the problem
C.accept the consequences of their actions
D.start using non-plastic materials immediately

It can be inferred from the passage that ________.
A.plastic pollution can be addressed by recycling
B.the threat of pollution has diminished dramatically
C.plastic pollution is much harder to deal with than it seems
D.certain communities should take responsibility for plastic pollution

This pen, ________is made of gold, was given to me by my father on my 14th birthday.
A.that
B.which
C.whose
D.when

Why________go to the park for a change?
A.we don’t
B.don’t we
C.we should
D.we should