三、根据所给的语境完成句子
1.Whenwegohome,weshould(应当)t_____o_____thelightsinourclassroom.
2.Johnisadoctor.Heworksinah______.
3.It’ssevenintheevening.Helenisdoingherh______,butherparentsarew_______CCTVnews.
4.It’sverycoldoutside.Youcanp_____o_____yourcoat.
5.Lookatthec_____onthewall.Youcank______thetime.
6.Therearesevend____inaweek.