the book store is open ,l----go ang buy soom books.a couldb could_英语解答

the book store is open ,l----go ang buy soom books.
a could
b couldn't
c did can
d should
选什么为什么

人气：214 ℃　时间：2019-11-10 12:31:07

解答

should 既然书店是开着的,可以排除 b 和 c ,c 语法都不通.
a 不对是因为 could 是过去式,但前面有is ,所以不可能,