Question

9. ______, have you received that letter?

9. ______, have you received that letter?
A. By all means
B. By no means
C. By this means of
D. By the way

Answer 1

应该选D。
by all means表示“务必，尽一切可能”；by no means表示“绝不”；by this means of表示“通过这种方法”，by the way表示“顺便问一句，顺便说一句”。

Answer 2

D

by the way顺便地，附带说说; 顺便一提; 最符合语境

by all means表示“一定”；by no means表示“绝不”；by this means of表示“通过这种方法”