Unit7 How much are these socks一、单项选择（共 20 小题；共 20 分） 1. --- How much the pair of shoes?--- Twenty dollars is enough.A. isB. areC. wasD. were 2. --- How much the bottles of milk?--- 31 yuan.A. areB. isC. amD. be 3. the museum from 8 a.m. to 5 p.m.?A. Be; openedB. Be...
