下列各组中加点字注音有两个错误的一组是 （ ）

Halfway up the mountain we stopped to______________.

only too ready to help others, seldom, _____ ,refusing them when they turn to him

The thief trapped in the house ________ from the window but the fear of falling to his death scared him not to do so. [ ]

I am sorry you’ve been waiting so long, but it’ll still be some time ________ the professor gets back[ ]