The invention of the typewriter was a great_______ to communication and printing.
A.contribution | B.devotion | C.revolution | D. construction |
This is not my story, nor ______ the whole story. My story plays out differently.
A.is there | B.there is | C.is it | D.it is |
At school, some students are active ______ some are shy, yet they can be good friends with one another.
A.while | B.although | C.so | D.as |
(2012辽宁卷)Not until he retired from teaching three years ago having a holiday abroad.
A. he had considered | B. had he considered |
C. he considered | D. did he consider |
It was 80 years before Christopher Columbus crossed the Atlantic______ Zheng sailed to East Africa
A.when | B.that | C.after | D.since |
The headmaster will not permit the change in the course, nor______ it a thought.
A.does he even given | B.he even gives | C.whether | D.he will even given |