1) They ................. friends! a) can't be b) must be c) could be 2) She .................. in love! a) must have fallen b) can be c) mustn't be 3) She ........................... very angry! a) can't have been b) must have been c) might have been 4) Our guests ........................ late! a) might be b) should be c) can't have been 5) .......................... this be true?! a) Must b) Could 6) They ............................ have met a long time ago. a) should b) must c) musn't 7) These two ........................ siblings. a) can be b) mustn't be c) may be 8) You ...................... have cried a lot! a) could b) may c) must 9) There ...................... someone in this house! a) must be b) mustn't be c) can't have been 10) It ....................... your dog! a) must be b) could be c) could have done

Modals for speculation

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