语法与词汇Ensuring an adequate water supply _____ a concern ever since people began to live intowns and cities.
语法与词汇An area in ________ the computer has made big progress is in playing chess
语法与词汇Older, less dogmatic theories better explained how the problems in the financial ________dragged down the rest of the economy
语法与词汇The picture________ him of his happy childhood with his grandparents in the countryside
语法与词汇________many days in the desert, the explorer was relieved when he eventually found water
语法与词汇The grape is the ________, juicy fruit of a woody vine
语法与词汇After a concert tour in Asia, England and Canada, he will______work on a five-language opera.
语法与词汇The children will have to ________ their play-time hours when school opens
语法与词汇Shoes of this kind are _____ to slip on wet ground.
语法与词汇If it is true that morality cannot exist without religion, then does not the erosion of religion herald the ________ of morality?
语法与词汇The date of the meeting has been________ from the 5th to 8th June
语法与词汇The schoolboys are more ________not to make any mistakes in spelling than ever before
语法与词汇Since she retired, she has been living partly on her pension and partly on the________on her savings account
语法与词汇If you get into difficulties, dont hesitate to ask ________ advice
语法与词汇Nowhere in nature is aluminum found free, owing to its always ________with other elements, most commonly with oxygen
语法与词汇As he was getting old, his memory of the past began to ________
语法与词汇The attendants who are ________ managed to cope with me without being able to speak English
语法与词汇Both approaches agree on what is depicted in the poem, but not on how it should be _____.
语法与词汇
语法与词汇You need to ________ on him that it will only work if it is done properly