blood if you can and many lives will be saved.A. GivingB. GiveC. GivenD. To give

问题补充：

blood if you can and many lives will be saved.

A. Giving

B. Give

C. Given

D. To give

答案：

A. Giving

(答案→)B. Give

C. Given

D. To give

解析：本题考查祈使句（表条件）+ and +主句（表结果），表示……,就会…… 。句意：如果你能够献血，许多生命就会被拯救。