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• Thenaughtyboywassittingatthedesk,

• 问题详情：Thenaughtyboywassittingatthedesk,______hardwhentheteachercameintotheclassroom. endedtostudy                  endingtobestudying endingtostudy                 endedtobestudying【回答】B知识点：非谓语动词题型：...
• 2022-08-139773