问题标题：
domeafavor!I'minurgenthelp!Mutiplechoice:1.No,Idon'tknowhisnumber.Ihavequite________rememberingmyown.A.troublesenoughB.troublesc.enoughtroubled.troubleenoughPleaseexplainwhytochooseit.Thankyou!
问题描述：
domeafavor!I'minurgenthelp!
Mutiplechoice:
1.No,Idon'tknowhisnumber.Ihavequite________rememberingmyown.
A.troublesenoughB.troublesc.enoughtroubled.troubleenough
Pleaseexplainwhytochooseit.Thankyou!
任敬萍回答：
B
词组havetroublesindoing(in可以省略)
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