The potential of economic development of one region varies from ______ of another.
| A．any | B．that | C．one | D．some |
Though _______ abroad for years, many Chinese still ______ the traditional customs.
| A．living…perform | B．having lived…preserve |
| C．having lived…observe | D．living…support |
In winter, the town is often _____by snow.
| A．broken off | B．cut off | C．taken off | D．set off |
His subtle acting made _________ people laugh, feeling more _______ their lives.
| A．depressed… content with | B．depressing… pleasant at |
| C．suffered… satisfied with | D．suffering …please with |
Farmers here _________keeping the soil rich and _________diseases.
| A．focus on…free of | B．center … free from |
| C．attend on… free of | D．depend on… free from |
One of her achievements is helping us understand _________ chimps ______ like humans.
| A．how…act | B．whether … act | C．how much… behave | D．how much…approach |