条件句练习及答案(共2页).doc

条件句( )1. I dont know if it _tomorrow. If it _,we wont go on a picnic.A. rains;rainsB. will rain;rain C. will rain;will rain( )2. In summer , food goes bad easily _ it is put in the refrigerator. A. until B. if C. unless( )3. -I hear Jack Chan will come to Laiwu next week. -Really? _ he comes, my younger sister will be very happy, AIf BUntil CUnless DBefore( )4. Could we play football in your playgro