Perce Blackborow and his companions stayed on Elephant Island for six months before rescue came, so they ________ a lot of difficulties.

下列各句中，没有语病的一句是

Mike hasn’t showed up yet. Why do you think ________?

I got outof the car, went ______ a gate and walked along a path.

Many Chinese universities provide scholarships for the students ________ financial aid.[ ]