1、A
help sb do sth 这个是固定短语,如果是doing则应该是help doing sth
2、A
A.Not at all
(回答道谢的客套语)不用谢,哪儿的话
‘Thanks very much for your help.’ ‘Not at all,it was a pleasure.’ “多谢你帮了忙.”“别客气,不用谢.”
not at all (礼貌地答谢或同意)别客气,没关系,没什么
B.You are kind
You are kind、You are so kind你真好.
3、B.something
some thing 指 某样东西 有特指的意思
something 指 一些东西
4、C.any
否定句要用any,肯定句用some