Look at the terrible situation I am in!If only I ----your ad

选择C
if only
adv.
1.要是 (表示虚拟语气,动词的时态要用过去时,be动词一律用were.如果动作本身就发生在过去,那就要用过去完成时.)
If only it hadn't!
要是没有登就好了!
If only I could swim.
要是我会游泳该多好.
If only I were rich.
但愿我很富.
If only she would come!
如果她能来就好了!
If only I had seen it.
要是我看见就好了.
If only someone could help me!
有谁能帮助我就好了!
2.(表示强烈的愿望) 但愿,真希望,只要...就好了：
If I only knew!
要是我知道该多好.
If only he will!
他愿意就好了!
Oh,if only he will!
要是他愿意就好了