Expertshavefoundthatthediseasewillleadtoagreaterincreas...

問題詳情：

Experts have found that the disease will lead to a greater increase in the number of sufferers unless ________ seriously when the symptom （症狀）first appears.

A. treated              B. to be treated       C. being treated           D. be treated

【回答】

A

知識點：非謂語動詞

題型：選擇題