32. The college education system should be reformed ______ it can follow the pace of the economic development.
The knee is the joint ______ the thigh bone meets the large bone of the lower leg.
This library has available _____ you want to borrow for your school.
If the dog hadn’t woken us, we wouldn’t have noticed the fire and it _______ to the house next door.
When the man came in, gun in hand, we all stood there, ________.
If nature does not provide man with the necessary material, it is the laboratory ____ he will turn to for it.