26.\x05The international situation has been growing ________

26.x05The international situation has been growing ________ difficult for the last few years.A) invariablyB) presumablyC) increasinglyD) dominantly27.x05Small farms and the lack of modern technology have ________ agricultural production.A) blunderedB) tangledC) bewilderedD) hampered28.x05The Japanese scientists have found that scents ________ efficiency and reduce stress among office workers.A) enhanceB) amplifyC) fosterD) magnify29.x05To ________ is to save and protect,to leave what we ourselves enjoy in such good condition that others may also share the enjoyment.A) conserveB) conceiveC) convertD) contrive30.x05In ________ times human beings did not travel for pleasure but to find a more favourable climate.A) primeB) primitiveC) primaryD) preliminary