I find writing ___ than speaking.
| A．much difficult | B．more difficult | C．much differiculty | D．more differiculty |
77. --- Have all the important letters been delivered at the first time?
--- I’m sorry. _______ only 40% of them.
| A．It is | B．They are | C．There are | D．It has been |
78. --- You _____ repay this debt this week according to the agreement.
--- Don’t worry. I _______ pay it off before the deadline.
| A．must; will | B．shall; must |
| C．should; am due to | D．shall; am bound to |
79. Ming and Qing tombs have ______ relatively undamaged. They, ______, have suffered some damage from centuries of exposure, wars and deliberate destruction.
| A．left; nevertheless | B．been remained; however |
| C．survived; though | D．excited; yet |
80. _______ the right decision _____ the future is probably the most important thing we will ever do in our life.
| A．Making; concerned | B．Make; concerning |
| C．To make; concerned | D．Making; concerning |
81. Male and female students are quite different from each other ______ the age at which they begin to develop an intellectual self-discipline.
| A．with regard to | B．in the light of | C．in honor of | D．on account of |