—Car prices have been going down sharply in the last 20 years.—It"s not surprisi
题型：不详难度：来源：
—Car prices have been going down sharply in the last 20 years.
—It"s not surprising because the law of market ________ the price of a product.| A．is controlling | B．controls | | C．has controlled | D．controlled |
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答案
| B |
解析
| B 考察动词时态。由语境可知，市场规律控制商品价格，这是一个客观真理，因此应该使用一般现在时。故B正确。 |
举一反三
Despite ongoing street protests, US beef ________ in South Korea due to its lower price.| A．is sold well | B．sells well | | C．sells poorly | D．is sold poorly |
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In general, most tennis ________ on hard courts or on clay.| A．plays | B．is played | | C．has played | D．has been played |
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If this product does not give you complete satisfaction, please return it to the manufacturer, stating when it ________.| A．is purchased | B．will be purchased | | C．purchases | D．has purchased |
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The vegetables in his field ________ well, because they are pollutionfree.| A．are selling | B．have been sold | | C．are sold | D．sell |
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Your headmaster would have been happy to give you two days off, if you had gone and explained that your parents ________ ill at the time.| A．were | B．had been | | C．are | D．would be |
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