The Bunsen Burner is so named because it is thought ___________ by Robert Bunsen.
A.to be invented | B.having been invented |
C.invented | D.to have been invented |
Such a fierce dog _____ that we had to wait outside before we could get into his yard.
A.has he had | B.did he have | C.he has | D.he has had |
An independent traveler would like to struggle with maps and signs ____ he finds the way.
A.since | B.until | C.before | D.when |
As soon as his teacher begins lecturing, he begins to doze off, not intentionally but _______.
A.personally | B.randomly | C.habitually | D.unconditionally |
The Chinese lunar New Year usually ______ two records: the world's most watched television gala show, and its busiest telecommunications network.
A.develops | B.witnesses | C.establishes | D.launches |
The world famous director, three of _____ movies won Oscar awards, is reported to have retired.
A.whose | B.which | C.whom | D.his |