British scientists have produced _____ they believe is the world’s smallest Christmas card．
| A．which | B．who | C．that | D．what |
I can think of many cases _______ students obviously knew a lot of English words and expressions but couldn’t write a good essay.
| A．why | B．which | C．as | D．where |
Do you know the man from ________ house the pictures were stolen?
| A．which | B．that | C．what | D．whose |
He was very angry and I can still remember the way _____ he spoke to me.
| A．how | B．that | C．what | D．which |
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 |