—WhatshouldIdowhenIfeelweakandtiredallday?—

問題詳情：

 —What should I do when I feel weak and tired all day?

— _____ some yang foods like beef may be helpful.

A. Eat              B. Eating               C. Ate

【回答】

選B。動名詞作主語, 答語中謂語是may be。

知識點：構詞法

題型：選擇題