Mr. Green stood up in defence of the 16-year-old boy, saying that he was not the one ________.
A. blamed B. blaming C. to blame D. to be blamed
Only by ______ your attention _____ what you are learning can you learn it well.
A. focus; on B. focusing; on
C. paying; on D. pay; on
How proud she is! She has been ________ Beijing University.
A. admitted to B. agreed to
C. received by D. addicted to
I used to quarrel a lot with my parents, but now we ________ well.
A．look out B．stay up C．carry on D. get along
---- She looks happy. She ________ have passed the exam.
---- I guess so. It’s not difficult after all.
A. should B. could C. must D. might
Scientists have to work hard to keep ________ with modern discoveries and developments.
A. company B. track C. pace D. touch
