The young lady was careful _________.
| A．not repeating her mistake | B．not repeated her mistake |
| C．to not repeat her mistake | D．never to repeat her mistake |
___we have satisfied you, you have no grounds of complaint.
| A．So | B．Since that | C．Now that | D．By now. |
Although, it's raining, ____are still working in the fields.
| A．they | B．but they | C．and they | D．so they |
Why these things happened was ____ the driver had been careless.
| A．because of | B．owing to | C．due to | D．that |
They had camped once before, ____ they knew what to take.
| A．because | B．now | C．so | D．since |
____ you are dismissed.
| A．Neither you go nor | B．Either you go or |
| C．Whether you go or | D．Both you go and |