Must I clean my room now, Mum—_______. You can do it tomorrow.

I shall never forget the day _____ Shenzhou Ⅵ was launched, _____ has a great effect on my life. [ ]

We are good friends.I____her study(学习)English

Susan came to the party yesterday, but it was already half past eight ______she turned up.

You needn’t worry about _______food to eat this evening．