—_______you ever________part in an environmental project? —Yes, I have.
A.Did, take B.Have, taken C.Do, take D.Are, taking
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
All the students are working hard to________the standards of a strict teacher.
A.meet B.catch C.receive D.save
Governments have________laws to stop the sale of wild animals. We must obey them.
A.thrown B.played C.drawn D.developed
If sharks’ numbers________too low, it will bring danger to all ocean life.
A.drop B.jump C.fill D.climb
They have gone two days________any food. They are too hungry and weak to walk on.
A.in B.from C.without D.with
