问题
选择题
.When and where I shall go for this summer vacation_________ yet
A．has not decided
B．are not decided
C．has not been decided
D．is not being decided
答案
答案：C
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.When and where I shall go for this summer vacation_________ yet
A．has not decided
B．are not decided
C．has not been decided
D．is not being decided
答案：C