Lesson XXX: Review Exercises A.11. - A.20.

Exercise: A.17. Review ING-Modal-HAVE Action Form Use the fragments given to judge a situation in the past. For example: I didn't see John at the program last night. - might study - HE MIGHT HAVE BEEN STUDYING . Fred says that he didn't hear the telephone ring last night . - must sleep - HE MUST HAVE BEEN SLEEPING . He was at the movie yesterday afternoon. - should attend the class - HE SHOULD HAVE BEEN ATTENDING THE CLASS . Paul clothes are all wet . - must walk in the rain- HE MUST HAVE BEEN WALKING IN THE RAIN. 1. I wonder what John was doing in the language laboratory. -might do some research- 2. Paul spent the day talking to his friends. -should study for his exam- 3. They weren't in their room when I knocked. -might work in the garden- 4. We saw John kicking football on the lawn. -must wait for the match- 5. Mary got arrested for speeding yesterday. -shouldn't drive so fast- 6. The worker's face was covered with sweat. -must work hard- 7. I saw Fred lying on the couch. -might take a nap- 8. I wonder why he didn't come to the program yesterday. -must study for the exam- 9. Jim talked over the telephone for two hours last night. -might talk to his girlfriend- 10. Mary was busy in the kitchen. -might make a cake- 11. We missed the bus because we didn't see it arrive. -should look out for it- 12. There was a foot of snow on the ground this morning. -must snow all night long-