A pencil has teeth marks on it. A: The person who used the pencil was nervous. B: The pencil was chewed up by a toddler or pet. C: Someone or something chewed the pencil. D: The pencil belongs to someone who is trying to quit smoking.

This is ____<br/>my pencil. I’m writing with _____ pencil. A: /; the B: the; a C: the; / D: a; the ?

M: Can I borrow your pen Mine is out of ink.W: Sorry, I don’t have a second pen. Would a pencil do What did the woman mean(). A: She could offer him a pencil. B: She had no pen herself. C: She could let the man have her pen.

M: Can I borrow your pen Mine is out of ink.W: Sorry, I don’t have a second pen. Would a pencil do What did the woman mean() A: She could let the man have her pen. B: She had no pen herself. C: She could offer him a pencil.

Tom drew the picture ______ a pencil. A: in B: on C: with

W: Could I borrow a pen from you There’s no ink left in mine.M: I’m afraid I don’ t have an extra one. Would a pencil be OK What did the man mean() A: He had lost his pen. B: He could lend her an extra pen. C: He could offer her a pencil.

What does Linda need A: Umbrella. B: Pencil. C: Dictionary.

—Whose is this pencil? —It's ________（I）.

This pencil is___ than that one.

A country produces only pencils and erasers. Pencil production is allocatively efficient if the marginal ________ of a pencil equals the marginal ________ of ________. A: cost; benefit; an eraser B: cost; cost; an eraser C: benefit; benefit; an eraser D: benefit; cost; a pencil