求新概念三单元前练习参考答案?答:f 1 found, had reached 2 have just moved, are 3 met, told, had just returned 4 will be set up 5 went or used to go 6 will have been studying 7 were arguing, stoleg is now known, are sighted, are washed, are rarely caught, was caught, was carried, was eventually brought, was ...