—Long time no see．Haven't you graduated from college?
—Yes．I____business management for 4 years in Beijing．
| A．study | B．have studied | C．studied | D．am studying |
When I got on the bus, II had left my wallet at home.
| A．was realizing |
| B．realized |
| C．have realized |
| D．would realize |
Frank insisted that he was not asleep I had great difficulty in waking him up.
| A．whether |
| B．although |
| C．for |
| D．so |
It was a nice meal, _______a little expensive.
| A．though |
| B．whether |
| C．as |
| D．since |
Suddenly a good idea me that I could use a computer to do the job.
| A．formed |
| B．came to |
| C．occurred |
| D．struck on |
I often ________the words I don’t know in the dictionary or on the internet.
| A．look up |
| B．look at |
| C．look for |
| D．look into |