2.
1. 已知等差数列的前n项和为,若M、N、P三点共线,O为坐标原点,且(直线MP不过点O),则等于 .
10.(★★★★)Tom couldn’t work the problem out because he wasn’t ________ clever.
A.much B.that C.a little D.as
9.(★★★★★)It’s quite late now but Mr.Li________ hasn’t turned up.
A.yet B.already C.still D.however
8.(★★★★)-Where have you been?
-I’ve ________ been to the library.
A.ever B.already C.just D.nearly
7.(★★★★★)The lessons given by Mr.Smith are always________ and interesting.
A.loving B.lovely C.lively D.vividly
6.(★★★★★)-Did all of them go to the cinema?
-No.They________ went to the concert instead.
A.almost B.mostly C.most D.nearly
5.(★★★★★)Jim is a kind boy.He is________ willing to help his classmates.
A.so B.much C.too D.such
4.(★★★★★)It was________ impossible for him to finish the work alone by five o’clock in the morning.
A.very B.quite C.too D.much
3.(★★★★)-Can I help you?
-Well,I’m afraid the box is________ heavy for you,but thank you all the same.
A.so B.much C.very D.too
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