Question

【题目】---Did you remember to take the key to Tom?

---Yes, I gave it to him ________ I saw him.

A. while B. once

C. suddenly D. the first time

Answer 1

【答案】B

【解析】while当；once一旦；suddenly突然地；the first time第一次。根据句意，可知选B。句意：-- 你记得把钥匙给汤姆吗？--记得，我一旦见到了他，我就给他了。