In the swimming race, three boats will be ____in case of an emergency.
| A．standing by | B．turning on | C．getting on | D．running on |
Antarctic __________ we know very little is covered withthick ice all the year round.
| A．in which | B．where | C．that | D．about which |
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 |