When people catch sharks, they________their fins and throw the sharks back into the ocean.

A.turn off B.pull down C.cut off D.put on

They have gone two days________any food. They are too hungry and weak to walk on.

A.in B.from C.without D.with

If sharks’ numbers________too low, it will bring danger to all ocean life.

A.drop B.jump C.fill D.climb

Governments have________laws to stop the sale of wild animals. We must obey them.

A.thrown B.played C.drawn D.developed

All the students are working hard to________the standards of a strict teacher.

A.meet B.catch C.receive D.save

Ken________science and he has won many prizes for it.

A.is good at B.is weak in C.is thirsty for D.is patient with

—_______you ever________part in an environmental project? —Yes, I have.

A.Did, take B.Have, taken C.Do, take D.Are, taking

Next year, I will be in senior high school. I can’t believe________!

A.time went by how fast B.how fast time went by

C.what time went by D.what fast time went by

Waste things can be put to good________ if we have a creative mind.

A.way B.line C.use D.row

My aunt lives in a house that she built________ out of rubbish.

A.itself B.herself C.she D.it