Parents always ask their children to spend more time ( ) and not to waste much time ( ).

问题描述:

Parents always ask their children to spend more time ( ) and not to waste much time ( ).
Parents always ask their children to spend more time ( ) and not to waste much time ( ).
选项:
①to study ,to play ② studying ,play
③studying ,to play ④ studying ,playing

1.答案:④ studying,playing
2.
固定短语:
spend time (in) doing sth 花费多少时间做某事;
waste time (in) doing sth 浪费多少时间做某事