_______ in her graduation paper, Mary has no time to do a part-time job.
| A．Having been burying | B．Having buried |
| C．To be buried | D．Buried |
Not only_______polluted but________crowded.
| A．was the city,were the streets | B．the city was,were the streets |
| C．was the city,the streets were | D．the city was,the streets were |
I like_____ in the autumn when the weather is clear and bright.
| A．this | B．that | C．it | D．one |
1.He is talking so much about America as if he________ there .
| A．had been | B．has been | C．was | D．has gone |
While in university，we were offered a number of afterschool activities to ________ our social skills.
| A．create | B．gr ow |
| C．develop | D．settle |
--- Are you worried about her safety?
--- Just ________. She isn’t alone.
| A．entirely | B．gradually |
| C．generally | D．slightly |