_______ with care, one tin will last for six weeks.
| A．Use | B．Using | C．Used | D．To use |
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 |
This is the hotel ________ last month.
| A．which they stayed | B．at that they stayed |
| C．where they stayed at | D．where they stayed |
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 |