第1个回答 2011-09-03
Didn't ann spend half a year learning baseball ?
yes , she did
no,she didn't
how long did ann spend in learning baseball?
第2个回答 2011-09-03
1.Did it take Ann half a year to learn baseball?
It didn't take half a year to learn baseball.
What time did it take Annto learn baseball?
Who did it take to learn baseball?
2. Did Ann spend half a year learning baseball?
Ann didn't spentd half a year learning baseball.
Who spent half a year learning baseball?
What time did Ann spend half learning baseball?