Despite a population of only 60,000 people in the area, ________ remains a split between three diverse racial groups.
| A．what | B．it | C．that | D．there |
You look so tired tonight. It is high time you_________.
| A．went to bed | B．went to sleep | C．go to bed | D．to sleep |
--I don't think we have met before.
--Yes, once at a party, but we___________.
| A．weren't introduced | B．didn't introduce |
| C．haven't introduced | D．were not introducing |
Our new house is very___________ for me as I can get to the office in five minutes
| A．convenient | B．comfortable | C．natural | D．helpful |
--I can't find Mr. Smith.
--It was in the hotel___________ he stayed.
| A．that | B．where | C．which | D．since |
My uncle___________ until he was forty-five.
| A．married | B．didn’t marry |
| C．was not marrying | D．would marry |