Spacecraft “Discovery” has failed in the course of launch.--? They have been preparing

发布时间：2020-08-17 13:58:35

Spacecraft “Discovery” has failed in the course of launch.
----    ? They have been preparing for the test.
A. How e
B. When
C. How
D. Why not

网友回答

(答案→)A. How e
B. When
C. How
D. Why not
解析：how e在这里的意思是“怎么回事？”，表示不解，惊讶。
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