Do you know the factory, __________ products are of high quality?
| A．which | B．whose |
| C．that | D．its |
Experiments of this kind ___in both the U.S and Europe well before the Second World War.
| A．had conducted | B．have conducted | C．have been conducted | D．had been conducted |
At the meeting, the old man ______ some good advice about bringing down the market price of housing.
| A．came about | B．came along | C．came up with | D．came out |
It is nice to hear from a close friend. ______, we last met more than thirty years ago.
| A．What’s more | B．That is to say |
| C．In other words | D．Believe it or not |
It is his horse , according to the old man , _______ saved him from the trap.
| A．who | B．that | C．which | D．what |
Do you have any difficulty ________?
| A．on listening | B．to listening |
| C．for listening | D．in listening |