If you get tired, learn to rest, not to quit. 如果你累了，学会休息，而不是放弃。

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If only you can be mine.如果你是我的就好了。

If you would come back.如果你愿意回头

If u will just take me It might just complete me. 如果你愿意带走我我的人生就完整了

如果你懒得呼吸，我也只好成全你.

If you treat me as a joke, I must give you sorrow.如果你把我当做一个笑话，我一定让你乐极生悲

Go back,if yuo want(如果你想，就回来)

“If you ask me to go with you, don't be shy. ”“如果你开口我一定和你走你别害羞”

If you are not happy, it's time to change something. 如果你不开心，那是应该改变的时候了

If you ever cvied for me.（如果你曾为我落泪）

如果你懒得呼吸，我也只好成全你.