__________naturereserves_________uslearnmoreaboutprote...
來源：國語幫 1.45W
問題詳情：
__________ nature reserves _________ us learn more about protecting animals.
A. Studying , helps B Studies , to help
C. Study , helping D Studying, help
【回答】
A
知識點：動詞和動詞短語
題型：選擇題
