You’d better go there by train.The train ticket is________the airplane ticket.
| A．as cheap three times as | B．as three times cheap as |
| C．three times cheaper than | D．cheaper three times than |
The train __________ she was travelling was late.
| A．which | B．what | C．on which | D．in that |
—Howdo you like the book?
—It's quite different from __________ I read last month.
| A．that | B．which | C．the one | D．the one whose |
Is this the museum __________ you visited the other day?
| A．that | B．where | C．in which | D．the one |
I refuse to accept the blame for something __________ was someone else's fault.
| A．who | B．That | C．As | D．what |
This is the small house—less than 15 square meters, under __________ roof lives a large family of three generations.
| A．which | B．that | C．its | D．whose |