如果你想解开这个谜题，就需要集中注意力。

You need to ___concentrate if you want to solve this puzzle.

那么吵，我无法集中精力工作。

I can't ___concentrate on my work with all that noise.

接下来的几个月，她将专注于她的学业。

She's going to ___concentrate on her studies for the next few months.