-- Mom, when shall we go to Weifang Museum this weekend?-- Oh, sorry. I'm going to Beijing for a meeting. ___Saturday __ Sunday is OK.
– When shall we meet again next week? -- _______ day is possible. It’s no problem with me.
In the dark street, there wasn't a single person __________ she could turn for help.
She is _______of the two.
It is _______ outside. Let’s put on our raincoats and go out, Tom.
A spaceship flies at about eleven kilometers _______ second.