用括号中动词的正确形式填空he would enjoy this if he___(be) presentshi can

用括号中动词的正确形式填空
he would enjoy this if he___(be) present
shi can do better if shi__(try)
if you play with matches,you__(burn)your fingers
if you broke this window,you__(have to)pay for it
if you__(lose)your way,you would have to ask a policeman
if you__(not apologize),he will never speak to you again
if he__(be)clever,he would not have any difficulty
what would you do if you__(win)a lot of money?
if I were you,I__(not be)so confident
if you__(can)help me,I would be grateful
请大家帮帮忙
谢谢
有的是非条件形状语从句