關於Expertshavebeenwarni的百科

•  Expertshavebeenwarning   ofthehealthriskscausedbypassi...

• 問題詳情： Expertshavebeenwarning   ofthehealthriskscausedbypassivesmoking  A.atatime    B.atonetime   C.forsometime  D.forthetime【回答】 C 解析：本題考查固定短語。從句中havebeenwarning可知，應用forsometime一段時間，atatime每次；atonetime曾經...
• 2019-05-1831260