Tony ____ for the company as an engineer for twodecades. Now he teaches mechanics m Peking University.

下面词语中加点的字的读音，没有错误的一项是：

We cannot figure out ____quite a number of insects, birds, and animals are dying out.

Don’t let such an unimportant matter as this come between us _____ we can concentrate on the major issue.

With so much _____ equipment, wood and paper in one place, there is a danger of fire.[ ]