[英语选择题2题] Then he ____the student to allow him to go on with

[英语选择题2题]
Then he ____the student to allow him to go on with his reading.
A.let B.left C.asked D.helped
答案好像是A还是B的?请讲一下语法点!
Every afternoon,he went to the shop to ead ____ at a time.
Aa little bit B.little C.a few D.few
这里答案是选A的!但我不明白为什么选A?请指教.
第二题打错了
Every afternoon,he went to the shop to ead ____ at a time.这里不是ead是read!