Question

I used to collect seashells _____ the seashore when I was ten years old.

1. A.
   on
2. B.
   in
3. C.
   by
4. D.
   of

Answer 1

A
“在海滩上”用介词on, 而by the seashore“在海边，在海滩附近”，“in the seashore”在海滩里，由题意“我十岁时，在海滩拣贝壳”可知应选A。