开篇语
标点符号决定谓语还是非谓语
题一：
Tom, I want you to do this: ________ still while I take the pictures.
A. keep B. keeping C. to keep D. kept
题二：
He is said _______ abroad, but I don’t know where he studied.
A. to study B. to be studied C. to be studying D. to have studied
题三：
The book is said ________ into English soon. We are looking forward to it.
A. to translate B. to be translated C. to be translating D. to have been translated
