--Excuse me, teacher, can I ask you something about the last class? I didn’t quite understand it.--Sure! Please feel _________to ask me anything!
--- Dad, I'm going for Jim's birthday party. I'll be back before 10:00.--- ____________.
The ________ meeting _______ at two o'clock in the afternoon.
______ takes my mother two hours _______ housework every day.
We can see only one of the doors ______.
--- It's time _________.--- I'm coming,Mum.