a,d 都對。只能說題目出的不好
http://www.ldoceonline.com/dictionary/need_1-> 1 ...
http://www.ldoceonline.com/dictionary/requireLDOCE光碟版有這註解(找Register那方框):
http://ppt.cc/EQMF"need"是基礎/簡單/常用字,但是尚未到因此就"錯"的地步再說"a lot of"也是偏非正式用法,既然a lot of都用了,沒道理needs不能用
https://ahdictionary.com/word/search.html?q=lot-> 1 ... "Informal"總之題目出的不好