We don’t write to each other regularly，but we do keep in
touch by telephoning _____.
| A．at a time | B．once | C．at once | D．once in a while |
That is the day ______I'll never forget.
| A．which | B．on which | C．in which | D．when |
Do you know the year ______the Chinese Communist Party was founded?
| A．which | B．that | C．when | D．on which |
Do you know the man _______?
| A．whom I spoke | B．to who spoke | C．I spoke to | D．that I spoke |
The place _______interested me most was the Children's Palace.
| A．Which | B．where | C．what | D．in which |
The dictionary published by Oxford University Press recently has really ______ because it is of great use to the learners of English.
| A．taken away | B．taken down | C．taken off | D．taken out |