我不知道我能不能做好 英语

I am not sure if I can perform correctly.

I am not sure if I can do it right.

上海灵格风英语

I don't know whether I can do well or not.

i'm not sure if i can do this well enough.

I wonder if I could do it well.

I do not know if I can do a good job

题 呢？？