What will happen if the parachute ______?, won't open, doesn't open, might not open, I won't sign up for the dancing competition unless Jack ______ my partner., is, must be, will be, When you ______ Tom, tell him I want to see him., will see, see, might see, If they make a good offer, I ______ the house., shouldn't buy, buy, will buy, He'll try to get money from you if he ______ you've won the lottery., knows, will know, would know, He won't ask for help unless it _______ absolutely necessary., will be, is, might be.

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