Be quick,Tom!I need pen to mark the page.Can you get
for me?
A.one;it B.a;that C.the;one D.a;one
Be quick,Tom!I need pen to mark the page.Can you get
for me?
A.one;it B.a;that C.the;one D.a;one
D
句意为：快点，汤姆!我需要一支笔来标一下页码，你能给我拿一支吗？one代替前面所提到的一支笔。