单项选择题

If you can't solve this problem, why not try ______ help

A．to ask for
B．asking for
C．to ask
D．asking
<上一题 目录 下一题>
热门 试题

填空题
When did they gradually become friendly againAfter both of them ______.
填空题
( )阳性反应 ( )腹部绞痛
相关试题