Sporting events

8. the biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them.
   a. shan’t        b. can’t       c. needn’t      d. mustn’t   
9. —where is my dictionary? i remember i put it here yesterday.  —you    it in the wrong place.
   a. must put     b. should have put     c. might put    d. might have put  
10. the teacher _____ have thought johnson was worth it or she wouldn't have wasted time on him, i suppose.    a. should     b. can      c. would     d. must  
11. --- she looks very happy. she ____ have passed the exam. --- i guess so. it’s not difficult after all.
   a. should b. could c. must  d. might  
12. ---turn off the tv, jack. ___ doing your homework now? ---mum, just ten more minutes, please.
a. should you be    b. shouldn't you be    c. couldn't you be   d. will you be           
13. —guess what! i have got a for my term paper.
—great! you ______ read widely and put a lot of work into it.
   a. must      b. should      c. must have     d. should have 
14. john, look at the time. _____ you play the piano at such a late hour?
a. must    b. can   c. may  d. need
15. we     have proved great adventurers, but we have done the greatest march ever made in the past ten years.   a. needn’t     b. may not     c. shouldn’t       d. mustn’t
16. there is no light in the dormitory. they must have gone to the lecture, _______?
    a. didn't they     b. don' t they   c. mustn't they       d. haven' t they