Tina’ssisterbegantorideabiketoschool
問題詳情：
Tina’s sister began to ride a bike to school ___________.
A. when 6 years old the age of 6 C. at the age of 6 years D. at 6 years old
【回答】
B
知識點：介詞和介詞短語
題型：選擇題
問題詳情：
Tina’s sister began to ride a bike to school ___________.
A. when 6 years old the age of 6 C. at the age of 6 years D. at 6 years old
【回答】
B
知識點：介詞和介詞短語
題型：選擇題
