一、ABCDD DBCDD BBCDD

二、AABCB AABBB

三、DDAAA CCDDD

四、 was doing is was doing to leave natural easily importance

五、grew into to make for the first time are in danger encourages us to help

will catch the school bus at the beginning are good at take away

六、you will what is How long How can by plane

七、She started to eat bamboo shoots and leaves

Less and less space

Too much traffic