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用if或unless填空

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用if或unless填空
1.______ he wants to see me,you can tell him to wait,
2.______ it snows tomorrow,we'll have a day or two off.
3.We won't go to his party ______ he invites us.
4.She is sure to pass the examination ______ she is ill.
5.I'll take that computer ______ I have enough money.
6.______ my grandma wears glasses,she can see better.
7.I won't buy that backpack ______ it costs less than ¥20.
8.______ I'm tired,I'll have a rest for tea.
B.用所给单词的适当形式填空
1.If he ______ (get) a low mark in the test,he ______ (study) harder;
2.If you ______ (swim) every day this summer,you ______ (be) very healthy.
3.If he ______ (not hurry),he ______ (not see) the beginning of the match.
4.You can't go out unless you ______ (finish) your homework.
5.Unless I save my money carefully,I ______ (not be) able to buy a football.
6.If it ______ (not rain) tomorrow,we ______ (go) to the park.
7.If he ______ (return) to the school,I ______ (let) you know.
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B.1.gets will study
2.swim will be
3.doesn't hurry wouldn't see
4.finish
5.won't be
6.doesn't rain will go
7.returns will let