Neither Tom nor Jack and I ____ his students.
| A．are | B．am | C．is | D．was |
The scientist is well known us his great achievement．
| A．to；for | B．by；for | C．by；as | D．to；in |
My name is Robert， most of my friends call me Bob for short．
| A．then | B．instead | C．however | D．but |
I ran an old friend of mine yesterday，whom I hadn’t seen for ages．
| A．across | B．cross | C．after | D．for |
She thought I was talking about her daughter，，in fact，I was talking about my daughter．
| A．whom | B．where | C．which | D．while |
He decided to the matter himself．
| A．look through | B．look into | C．look after | D．look up |