Had they known what was coming next, they second thoughts.
A. may have B. could have
C. must have had D. might have had
John talked with me for about an hour yesterday．Never ________ him talk so much．
A．did I hear B．had I heard C．I had heard D．I heard
________ deep down in the earth for thousands of years, the dead forest has rotted away and become coal．
A. Having buried B．Being buried
C．Buried D．To be buried
In my view, London's not as expensive in price as Tokyo but Tokyo is ______in traffic.
A. the most organized B. more organized
C. so organized as D. as organized as
Catherine, ____ the alarm clock for 6 o’clock, or you would oversleep and be late for the train.
A. setting B. sets C. set D. to set
The companies are working together to create they hope will be the best means of transport in the 21st century.
A. which B. that C. what D. who
