Pollution has become a serious problem in almost all the big cities of the wo

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问题 Pollution has become a serious problem in almost all the big cities of the world. City people are becoming more and more worried about how they can (11) pollution. They are also concerned about whether the government is doing enough to (12) the e [br]

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答案 creating

解析因为放在介词without之后，所以用动名词形式。

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Pollution has become a serious problem in almost all the big cities of the wo

Fishareanimalsthatliveinwater.Theyliveinalmostanyplace(11)the

Fishareanimalsthatliveinwater.Theyliveinalmostanyplace(11)the

Learningtocopewithahealthproblemcancontributetoabetterlife.A、学会预防健康问

Themoreyoulearn,thebetterableyouwillbetosolvetheproblem.A、你学的越多，就越能

It______almosteverydaysofarthismonth.A、israiningB、rainedC、rainsD、has

Thegirlwillnotbecomeanursebecauseshewillfaintatthe______ofblood.A

Thisproblemwillbe______discussedinChapter2.A、deepB、enoughC、furtherD、f

AirandwaterpollutionareourNumberOneprioritiesregardingthecurrentand

Thisroadisvery(danger)______becausetherewerefiveseriousaccidentslast

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