Nowthatyouknowallthefacts，youcanmakeaninformed___(choose).

It’s___(reasonable)toexpectpeopletoworkmorethan60hoursaweek.

Althoughtheyagreethatlifeisimportantandshouldberespected,theyfeelthatthequalityoflifeshouldnot__(ignore).

Thegroupismadeupoflocal___(music)whohavebeenperformingtogetherforseveralyears.

一质点在xy平面内运动，运动方程为r=2ti+(3t2+2)j，则该质点的运动轨迹是()