You don’t know ______ I want to see you again. It’s a year since I last saw you.

He often gets up _______ nine o’clock _______ Sunday morning.[ ]

I find ________ difficult to remember everything, though I’m still young.

I don’t like talking on _______ telephone; I prefer writing _______ letters.

________ (,) the proposal concerning health food production was rejected for the lack of fund required.