Anyway, I can’t cheat him---it’s against all my __________.
| A．emotions | B．principles |
| C．regulations | D．patience |
33. — Can I help you?
— Do you have any of Michael Jackson's CDs ? I would like to buy _____.
| A．it | B．one | C．that | D．Those |
32. Tens of thousands of trees _____ in the area in the past few years.
| A．have been planted | B．were planted | C．have planted | D．had planted |
31. — I'm wondering why the visitors chose to stay with the host family.
— _____real local life.
| A．Experiencing | B．Experience | C．To experience | D．Having experienced |
30. How long do you think it will be _____ we can find a new water source?
| A．after | B．before | C．when | D．Since |
29. High up in the mountains _____ a quiet small village, with only 20 households.
| A．surrounds | B．locates | C．lies | D．Lays |