1) What will happen if the parachute ______? a) won't open b) doesn't open c) might not open 2) I won't sign up for the dancing competition unless Jack ______ my partner. a) is b) must be c) will be 3) When you ______ Tom, tell him I want to see him. a) will see b) see c) might see 4) If they make a good offer, I ______ the house. a) shouldn't buy b) buy c) will buy 5) He'll try to get money from you if he ______ you've won the lottery. a) knows b) will know c) would know 6) He won't ask for help unless it _______ absolutely necessary. a) will be b) is c) might be

1st conditional

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