They considered a computer, which was considered a great help in their work.
A.to buy; to be | B.buying; being | C.to buy; being | D.buying; to be |
Mary is the only one of the teachers who __________ a little Chinese because she is one of my friends who __________ been to China.
A.knows; have | B.knows; has |
C.know; have | D.know; has |
Joan is one of the best writers who __________ published a lot of books.
A.has | B.have |
C.have been | D.are |
It is the first time that I __________ the video of Gangnam Style.
A.had watched | B.watched |
C.am watching | D.have watched |
I have heard a lot of good things about you __________ I came back from abroad.
A.since | B.until |
C.before | D.when |
John thinks it won't be long __________ he is ready for his new job.
A.when | B.after |
C.before | D.since |