struggled

He said scientists had struggled to understand how and when the unique brains and remarkable intelligence of birds evolved.

But she struggled with injuries throughout her career which forced her to miss parts of several seasons, including almost all of the 2013 and 2014 Olympic season.

Indeed, big cities have struggled visibly with basic governance issues over the past four years, including keeping schools open, fighting crime, reducing homelessness, and managing the arrival of international migrants.

Daisy, seven, from Somerset, has visual difficulties and struggled to see the text on worksheets and the board at school.

The Chargers are just the fourth team in the last 40 years to hold each of their first nine opponents to 20 or fewer points, but the secondary has still has struggled at times.