The student became ______ the danger of smoking and decided to give it up.
| A．aware | B．aware that | C．aware of | D．aware with |
________ he has limited technical knowledge, the old worker has a lot of experience.
| A．Since | B．Unless | C．As | D．Although |
The village has developed a lot ________ we learned farming two years ago.
| A．when | B．which | C．that | D．where |
—Where's that report?
—I brought it to you ________ you were in Mr.Black's office yesterday.
| A．if | B．when | C．because | D．before |
Many of them turned a deaf ear to his advice，________ they knew it to be valuable.
| A．as if | B．now that |
| C．even though | D．so that |
A man cannot smile like a child，________ a child smiles with his eyes，while a man smiles with his lips alone.
| A．so | B．but | C．and | D．for |