--has jack finished his homework yet?--i've no idea,but he___it the whole afternoon

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• --has jack finished his homework yet?--i've no idea,but he___it the whole afternoon
• 1.China（ ）the bid to host the the World Expo 2010.A.has won B.won C.in winning D.wins2.The old man always ( ) thick glasses and works very hard.A.puts on B.takes off C.dresses D.wears 3.（ ）the center of Australia（ ）the desert which seems to go on forever.A.Has;covered with B.Is;covered with D.Did;cover with4.---Has Jack finished his homework yet?I am waiting for him.---I've no idea.But he ( ) on it the whole afternoo.A.is working B.was working明天我就要期末考
• 求高手完成下面关于现在完成时的练习1 I have_____met him before, so I have no idea about him.2 Jack has______ finished his homework.3 Mr. Wang has_____tanght in this school for many years 4 "Have you______seen the film?"     "No, Ihave_____seen it." 5 "has the bus left______?"     "Yes, it has_____left."改错Have you ate fish and Fench friedI has lost my chemistry bookI haven't never been to that farmHe has had lunch yetHave you saw this movie yet?My brother has not return
• --has jack finished his homework yet?--i've no idea,but he___it this morning A.was doing
• 1 Jack has ————finished his homework ———— an hour ago 2 Has the bus left————?Yes ithas ____ left.3 He has lived in Nanjing _______the year before last4 i have known him _______ we were children5 it is about 10 years ______she left the city(never ever already yet foe since)填空
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