（年北京市西城区高三5月二模试题）28. It was unusual that such close neighbors ______ not know one another.
| A．could | B．would | C．must | D．should |
What have you got _____ will help a cold?
| A．what | B．that | C．it | D．who |
Recently I bought an ancient Chinese vase, _______ was very reasonable.
| A．which price | B．the price of which | C．its price | D．the price of whose |
All of the flowers now raised here have developed from those _____ in the forest.
| A．once they grew | B．they grew once | C．that once grew | D．once grew |
The modern history of Italy dates from 1860, ______ the country became united.
| A．when | B．if | C．since | D．until |
We will be shown around the city: schools, museums, and some other places, _______ other visitors seldom go.
| A．what | B．which | C．where | D．when |