___ we have overlooked, however, is that there is no one answer to this question．
| A．Which | B．That | C．Where | D．What |
Please tell me the way thought of____ the garden.
| A．take care of | B．to take care of |
| C．taking care of | D．how to take care of |
____ I had done it I knew I had made a mistake.
| A．Hardly | B．Directly | C．mostly | D．Nearly |
I have a lot of books, half of____ novels.
| A．which | B．that | C．whom | D．them |
You can, ____, come to join us in the singing programme.
| A．if you happy | B．when you possible |
| C．if you please | D．when you necessary |
He came home after midnight, and____, he got drunk.
| A．worse still | B．that means |
| C．what’s the matter | D．what else |