—Would you mind if I closed the window?—______. It’s that cold outside.
It was _____ he came back from Africa that year _________ he met the girl he would like to marry.
The way the guests ___ in the hotel influenced their evaluation of the service.
A good friend of mine from I was born showed up at my home just before I left for Beijing.
—Ann is in hospital. — Oh, really? I __ __ know. I __ __ go and visit her.
When he the door, he found his keys were nowhere.