题目内容：
He focused his effort ____the house ___sale for fear that the prices of them would go up suddenly.A．on; forB．on; inC．to; forD．to; in
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单选题：He focused his effort ____the house ___sale for fear that t..
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The solution ______ this problem is acceptable. So I am ___..
The solution ______ this problem is acceptable. So I am ______ it. A．of; againstB．to; forC．to; onD．on; for
Living on his own and only having a dog _____ company, the ..
Living on his own and only having a dog _____ company, the old man feels ______. A．in; aloneB．for; lonelyC．as: aloneD．as; lonely
As we know, every four years athletes from all over the worl..
As we know, every four years athletes from all over the world compete ____ medals in the Olympic Games. A．againstB．forC．withD．as
Despite all the benefits of building the subway in the city ..
Despite all the benefits of building the subway in the city center, only a few people argued ______ the project.A．in terms ofB．in place ofC．in favor ofD．in need of
The man is ________ a serious nervous breakdown because he i..
The man is ________ a serious nervous breakdown because he is unable to deal with pressure from daily life.A．in front ofB．in favor ofC．on behalf of D．on the edge of