If you ___ (can) help me,I would be grateful.

If you ___ (can) help me,I would be grateful. If you can help me,i will be grateful.If you could help me,i I would be much grateful if you could help me seek out a gir I would be grateful if you would consider me for the positio We would be grateful if you could help us. if you allowed me to go there ,i would be grateful是不是错句,为什么i If he ( )help me,I should be very grateful to you.为什么只能填shou I would be grateful if you could give me some advice If you could give me some advice I would be grateful. I would be very grateful if you could send me the invation l if you know his address,I would be very grateful.为什么用的不是knew --Excuse me,I wonder if you can help.I ___ my passpot.A.have