Thepatientswillhavetowaitallday
問題詳情：
The patients will have to wait all day ______ the doctor works faster.
A. if B. unless C. whether D. that
【回答】
B
知識點：連詞
題型：選擇題
問題詳情：
The patients will have to wait all day ______ the doctor works faster.
A. if B. unless C. whether D. that
【回答】
B
知識點：連詞
題型：選擇題
