The bike ____ he went to school was stolen last week,which made him feel sad.
on which
暂无解析
Theaeroplane____shewastravelingwasdelayedforthreehoursatleast.
Lastnighthesawtwodark_____enterthebuilding,andthentherewastheexplosion.
Hehasfourson,____(他们全部都是那个偏僻山村里的高级教师)。
Yoursister_______tovisityouquiteofen,didn'tshe?
Thetimehascome_____wemakeextensiveuseofnuclearenergy.