(By the time) Neil Armstrong and Edwin Aldrin, Jr. walked on the Moon (in July 1

游客2025-03-17 4

问题 (By the time) Neil Armstrong and Edwin Aldrin, Jr. walked on the Moon (in July 1969), there (will have) been many (space) expeditions.

选项 A、By the time
B、in July 1969
C、will have
D、space

答案 C

解析 by the time表示“到……时候”。由于从句中用了过去时态，所以主句表示过去的过去应用过去完成时。改“will have”为“had”。

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【B1】[br]【B12】A、forcedB、walkedC、foundD、tookA固定搭配。A和C都可用于“v．+one’sway”结构，结合