问题补充:
They the cat out for a walk now.
A. needn’t to take
B. don’t need take
C. needn’t taking
D. don’t need to take
答案:
A. needn’t to take
B. don’t need take
C. needn’t taking
(答案→)D. don’t need to take
解析:need可作为情态动词,后跟动词原形,否定形式是needn’t+动词原形,故不选AC,need也可作为实义动词,对于本题而言否定形式用助动词don’t,后跟动词可用to do或doing,故本题选D。