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课时作业(二十一) [选修模块7 Unit 2 Fit for life] [限时：30分钟] Ⅰ.单项填空 1．Now we’ve got a foot in the door；we are hoping to ________ a big market in China. A．open up B．open out C．open into D．open by 2．—It is a long time ________ we last met. —Yes，and it will be a long time ________ we meet again. A．that；until B．since；before C．when；that D．before；since 3．The President ________ the idea that the welfare system should be improved. A．applied to B．appealed to C．adjusted to D．subscribed to 4．He suffered from a terrible disease ________ regular overwork，so in order to cure the illness，he hurried to catch the train，which was ________ leave for Shanghai at 9：00 p．m. A．due to；owing to B．owing to；due to C．due to；likely to D．thanks to；due to 5．Penicillin was then produced ________ in order to meet the demands of the armies. A．in large amounts B．in large plenty C．in large quantities | 
