All of us found _____ necessary to learn a foreign language.
| A．this | B．that | C．it | D．what |
Write clearly ____ your teacher can understand .you correctly.
| A．since | B．for | C．because | D．so that |
___we have satisfied you, you have no grounds of complaint.
| A．So | B．Since that | C．Now that | D．By now. |
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 |