This year my brother made a little progressin his study, but _____, it’s been an unlucky year for him.

How much longer do you think we can ________? —Ten days, maybe. I’m not sure.[ ]

It wasn’t until a month later ____ I received his letter.

Is Millie in the classroom — , I don’t know.

My house _____ when you visited Beijing last time, so I didn’t invite you to my home