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war could break out any time between the two sides. A. pollution friendship condition situation
Every day one time,ten times one course,every course is two days Every day one time,ten times one course,every course is interval two days Once a day , ten courses,two courses with an interval of two days Once a day , ten times a course ,with an interval of two days between two courses
on time in time at times at all times
cooperation connection combination agreement
has passed had passed passed have passed
has passed had passed passed have passed
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it calls policymakers’ attention to a qualified work force it encourages workers to get better education it helps improve the workers’ ability to produce goods and services it enables policymakers to access the latest technology
The sun to be at the opposite side ofthe moon The moon to be at the opposite side ofthe earth The moon to be at its apogee The sun and the moon to be on thesame side
it calls policymakers’ attention to a qualified work force it encourages workers to get better education it helps improve the workers’ ability to produce goods and services it enables policymakers to access the latest technology
the differences in average income among countries the relationship between productivity and living standards the causes of the rise in living standards the importance of raising productivity
the differences in average income among countries the relationship between productivity and living standards the causes of the rise in living standards the importance of raising productivity
built to be built having built being built
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