– Do you know William failed the exam, Jenny? -- _____? As far as I know, he is always working hard.
-When ______ and visit our exhibition next month ? -When _______ , I will let you know .
---How long _______ each other before they ________ married ? -- -For about a year .
I really wonder ______ he has posted me many parcels _____ we worked together .
It is a rule in his family that ______ comes home earlier should cook the dinner for the family .