______ more effectively in the future, many people equip themselves with further education.
| A．Compete | B．Competing | C．To compete | D．Competed |
Most of the universities in China provided scholarships for students ______ financial aid. 
| A．in favor of | B．in honor of | C．in face of | D．in need of |
In the experiment the scientist kept a watchful eye________the developments and recorded every detail.
| A．in | B．at | C．for | D．on |
He has some trouble ______ his classmates, but he has no trouble ______ doing his lessons.
| A．with; with | B．in; in | C．with; in | D．in; with |
I bargained with the shopkeeper for a long time, and finally we agreed________the price.
| A．to | B．with | C．on | D．at |
________the rapid growth of short messages which are sent by mobile phones, the number of criminal cases through short messages are increasing.
| A．For | B．By | C．As | D．With |