1) I wouldn't swim in this river if I were you. It ________________ dangerous. a) might be b) might not be c) might have been 2) The window was broken, so the thieves ________________ got in throught that window. a) might have b) might be c) might 3) He ________________ killed him, but we need mor evidence.  a) mightn't b) might have c) might 4) 'I can't find my keys.' 'Have you checked in your car? You ________________ them there. a) might left b) might have left c) might leave 5) I think there ________________ a mistake in my exam. I must check it.  a) might be b) might c) might not be 6) I'm not sure I trust Peter. He ________________ the person we think he is. a) might not be b) might be c) might not have been 7) You should pick up the phone. It ________________ an important call. a) might not be b) mightn't be c) might be 8) There's a bit of traffic, so I ________________ arrive in time a) might b) might have c) might not 9) Nobody knows exactly why he died. But we think it ________________ been an accident. a) might b) mightn't c) might have

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