| 1.  Jerry promised     to come to work in time. He is not here, and he even ..... .   | 
     | 
 | isn’t calling | 
     | 
 | hasn't called | 
     | 
 | hasn't been calling | 
     | 
 | doesn’t call | 
     | 
 | 
     | 2.  As far as I know     Mike ..... Italian for quite some time, but he still doesn’t understand     very much.   | 
     | 
 | is learning | 
     | 
 | has been learning | 
     | 
 | has learnt | 
     | 
 | learns | 
     | 
 | 
     | 3.  Her family .....     from town to town ever since she can remember.   | 
     | 
 | is moving | 
     | 
 | has moved | 
     | 
 | moves | 
     | 
 | has been moving | 
     | 
 | 
     | 4.  Be careful with     paint. It ..... a certain amount of lead.   | 
     | 
 | contains | 
     | 
 | is containing | 
     | 
 | has contained | 
     | 
 | contained | 
     | 
 | 
     | 5.  I ..... Mario     for some time since he left Milan a few years ago.   | 
     | 
 | haven’t seen | 
     | 
 | don’t see | 
     | 
 | didn't see | 
     | 
 | aren’t seeing | 
     | 
 | 
     | 6.  Excuse me I     ..... a public telephone. Is there one near here?   | 
     | 
 | have been looking for | 
     | 
 | have looked for | 
     | 
 | look for | 
     | 
 | am looking for | 
     | 
 | 
     | 7.  Jack Strom has     been a postman all his life; he ..... mail to homes and offices to the     people of the town.   | 
     | 
 | is delivering | 
     | 
 | has delivered | 
     | 
 | has been delivering | 
     | 
 | delivers | 
     | 
 | 
     | 8.  ..... you a ride     home yet since he started working in your department?   | 
     | 
 | has     Sam been giving | 
     | 
 | Does Sam give | 
     | 
 | Is Sam giving | 
     | 
 | Has Sam given | 
     | 
 | 
     | 9.  The Alisons have     got three cars, two of which they never ..... .   | 
     | 
 | are using | 
     | 
 | use | 
     | have used | 
 | 
     | have     not use been using | 
 | 
     | 
 | 
     | 10.  Carol and I are     old friends. I ..... her since we studied in high school together.   | 
     | 
 | know | 
     | have known | 
 | 
     | are knowing | 
 | 
     | have been knowing | 
 | 
     | 
 | 
     | 11.  What ..... with     yourself? There is mud all over you!   | 
     | has you been doing | 
 | 
     | are you doing | 
 | 
     | did you do | 
 | 
     | have you been doing | 
 | 
     | 
 | 
     | 12.  Look here! I     simply refuse to believe what you ..... me now.   | 
     | are telling | 
 | 
     | have been telling | 
 | 
     | have told | 
 | 
     | tell | 
 | 
     | 
 | 
     | 13.  Paul looks young     for his age. He says he is 56 years old, but nobody ..... him.   | 
     | 
 | hasn’t believed | 
     | 
 | is not believing | 
     | 
 | believes | 
     | 
 | believe | 
     | 
 | 
     | 14.  Willy ..... from     his Uncle Alex since the latter immigrated to Canada.   | 
     | 
 | does not hear | 
     | 
 | have not heard | 
     | 
 | has not heard | 
     | 
 | is not hearing | 
     | 
 | 
     | 15.  Today the world     ..... so rapidly; things never stay the same.   | 
     | 
 | changes | 
     | 
 | has changed | 
     | 
 | is changing | 
     | 
 | has been changing | 
     | 
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 | 
 
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