£¨  £©1. There________a lot of red-crowned cranes in other parts of the world many years ago.

A. is B. are C. was D. were

£¨  £©2. I think________necessary for us to learn English well.

A. it B. its C. that D. that's

£¨  £©3. There will be________space for plants, animals and birds.

A. little and little B. less and little

C. little and less D. less and less

(  )4. The question is________for him to answer.

A. easy enough B. enough easy

C. easily enough D. enough easily