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1． ( )Usually, we don’t know how important something is ______ we lose it. A. or B. until C. as soon as D. if 2． ( )She had a stomachache she ate something bad. A. so B. because C. or D. although 3．（ ）Many children like fried chicken _______it is unhealthy food. A. if B. because C. although D. or 4．（ ）Mr. Brown knew nothing about the good news ______his wife told it to him. A. before B. after C. since D. if 5（ ）I don’t know if Jack _______ . If he_______, call me, please. A. will come; will comes B. comes; come C. comes; will come D. will come; comes | 
