E-mail, as well as telephones, ___ an important part in daily communication.
A.have played | B.is playing | C.are playing | D.play |
76. All flights _______ called off because of the terrible weather, they had to go there by train.
A.were | B.had been | C.being | D.having been |
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 |