Inspring,wecanoftenhearsomebirds 國語站 題庫 9.54K 大中小設定文字大小 問題詳情: In spring, we can often hear some birds_______ in our school. A. singing B. sing C. to sing D. sings【回答】B知識點:動詞和動詞短語題型:選擇題 TAG標籤:#