Although he made several inventions when he was very young, ______he was thirty.

游客2023-11-20  25

问题 Although he made several inventions when he was very young, ______he was thirty.

选项 A、his first real success did not come until
B、his real first success came until not
C、since his first real success did not come until
D、not until his first real success

答案 A

解析
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