1) Nobody knows exactly why he died. But we think it ........been an accident a) can have b) might have c) should have 2) I.................revised more for the exam. I was lazy, and now I'll fail! a) might have b) should have c) could have 3) Sarah looked very happy. She......passed her driving test.  a) must have b) should have c) can't have 4) I didn't know you were going to Phil's party yesterday. You ......told me! a) can't have b) should have c) must have 5) I can't believe Jim hasn't arrived yet. He ........taken the wrong train. a) can have b) must have c) should have 6) I can't believe Jim hasn't arrived yet. He........taken the correct train. a) can't have b) may have c) must have 7) You...........been ill yesterday. Jessie saw you at the bowling alley. a) couldn't have b) should have c) must have 8) I don't know where they went but they............. gone to Paris or Marseille. a) can't have b) must have c) may have 9) You ........ paid more attention. Now we are lost. a) must have b) can't have c) ought to have 10) The window was broken, so the thieves.........got in through that window. a) might have b) must have c) can't have

Speculation and Deduction

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