Ⅰ、D A B C

Ⅱ、
Thenweren't very strong；couldn't run fast or
play basketball well
Nowcan play basketball well
Ⅲ、（詞組至左而右）A C B

Ⅳ、1、couldn't
2、couldn't
3、was had
4、didn't

Ⅴ、1、It was small. Now it is big.
2、It was thin then.Now it is strong.
3、He was short then Now he is tall.

Ⅵ、T F T T