单项选择题

A．had had to
B．had to
C．has had to
D．has to
<上一题 目录 下一题>
热门 试题

单项选择题
A．similarB．criticalC．seriousD．crucial
A．similar
B．critical
C．serious
D．crucial
单项选择题
A．donatedB．chargedC．lentD．spared
A．donated
B．charged
C．lent
D．spared
相关试题