课时作业(二十七) [选修6 Unit 2 Poems]
(限时：35分钟)
Ⅰ.单项填空
1．—It's getting late. I'm afraid I must be going now.
—OK.________．
A. Take it easy B. Go slowly
C. Stay longer D．See you
2．With the advances of technology, plastics have taken the place of many ________ materials.
A. conventional B. optional
C. artificial D. potential
3．Many students tried their best not to make careless mistakes in the examination but some of them________ found they failed.
A．eventually B．completely
C．exactly D．effectively
4．We've got a general idea of what we want, but nothing ________ at the moment.
A. concrete B. ordinary
C. standard D. abstract
5．Our food supply ________. We'd better get some in case there's none left.
A. is running out B. has run out of
C. is using up D. has used up
