Find the one choice that best completes the sentence.
Tom ..................write to me until last year. Now he sends me e-mail.




A.is used to
B.uses to
C.used to
D.gets used to

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Read the following passage and mart the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.
What is meant by the term economic resources? In general, these are all the natural, man-made, and human resources that go into the production of goods and services. This obviously covers a lot of ground: factories and farms, tools and machines, transportation and communication facilities, all types of natural resources, and labor. Economic resources can be broken down into two general categories: proper resources- land and capital- and human resources- labor and entrepreneurial skills.
What do economists mean by land? Much more than the non-economist. Land refers to all natural resources that are usable in the production process: arable land, forests, mineral and oil deposits, and so on. What about capital? Capital goods are all the man-made aids to producing, storing, transporting, and distributing goods and services. Capital goods differ from consumer goods in that the latter satisfy wants directly, while the former do so indirectly by facilitating the production of consumer goods. It should be noted that capital as defined here does not refer to money. Money, as such, produces nothing.
The term labor refers to the physical and mental talents of humans used to produce goods or services (with the exception of a certain set of human talents, entrepreneurial skills, which will be considered separately because of their special significance). Thus the services of a factory worker or an office worker, a ballet dancer or an astronaut all fall under the general heading of labor.
The word “arable” is closer in meaning to _______.




A.dry
B.open
C.developed
D.fertile

Read the following passage and mart the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.
The time when human crossed the Arctic land bridge from Siberia to Alaska seems remote to us today, but actually represents a late stage in the prehistory of humans, an era when polished stone implements and bows and arrows were already being used and dogs had already been domesticated.
When these early migrants arrived in North America, they found the woods and plains dominated by three types of American mammoths. These elephants were distinguished from today’s elephants mainly by their thick, shaggy coats and their huge, upward-curving tusks. They had arrived on the continent hundreds of thousands of years before their followers. The woolly mammoth in the North, the Columbian mammoth in middle North America, and the imperial mammoth of the South, together with their distant cousins the mastodons, dominated the land. Here, as in the Old World, there is evidence that humans hunted these elephants, as shown by numerous spear points found with mammoth remains.
Then, at the end of the Ice Age, when the last glaciers had retreated, there was a relatively sudden and widespread extinction of elephants. In the New World, both mammoths and mastodons disappeared. In the Old World, only Indian and African elephants survived.
Why did the huge, seemingly successful mammoths disappear? Were humans connected with their extinction? Perhaps, but at that time, although they were cunning hunters, humans were still widely settled and not very numerous. It is difficult to see how they could have prevailed over the mammoth to such an extent.
Where were the imperial mammoths the dominant type of mammoth?




A.in South America
B.in the central portion of North America
C.in the southern part of North America
D.in Alaska