I'm not sure, but I'll do my best.

这个我不能保证，但我会尽力的。

youdao

I can't promise. But I'll do my best.

这个我不能保证。但我会尽力吧。

youdao

I can't promise, but I'll do my best.

这个我不能保证，但我会尽力的。

youdao

But I'll do my best.

NPR: Transcript: Bill Clinton's Prime-Time Speech

"I've been playing well this season, so to have this is a bit of a set back, but I'll just do my best to get back on the pitch, " he told BBC Scotland.

BBC: Scotland's Graeme Morrison faces Six Nation battle

If I'm asked to play there I'll do the best job I can - but my best position is further forward, in central midfield or out wide.

BBC: Wayne Rooney asks England fans not to boo John Terry