Eugene’s never willing to alter any of his opinions, so it’s no use ________ with him.
| A．to argue | B．arguing |
| C．argued | D．having argued |
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 |
He is very old,____ he still works very hard.
| A．but | B．if | C．when | D．as |