根据句意,用括号内所给单词的适当形式填空。
1.Itis________(fair)tomakegentlemenpayforeverything.Let’sgoDutch(AA制)!
2.Likee-mailandATMssome________(invent)makethespeedoflifefasterthanbefore.
3.Thecharitywalk________(it)isverymeaningfultomostteenagersit’snoteasy.
4.Amapwillbeusefulintheforestespeciallyifyouget________(lose).
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