单项选择题
A. admit their incorrect writing B. make use of their dictionaries in writing C. can correct their own papers D. help each other in their writing class
A. Get the best yield from. B. Raise the price of. C. Exaggerate the worth of. D. Earn a living on.
A. they see different things B. they cannot agree about things C. some have better eye-sights D. none of these