Paper books still play an important role in the US textbook market, with digital textbooks __________ less than 5 percent of the total.
#97580
A
composing of
B
making up
C
consisted of
D
accounted for
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It was reported that 115 miners in the flooded mine for eight days were pulled out afive at last．
#95325
A
trapped
B
being trapped
C
were trapped
D
had trapped
I found them ______ at a table, _______ in thought.
#96626
A
seated; losing
B
seated; lost
C
seating ; losing
D
seating; lost
This is probably the only way we can imagine ________ the current economic problems in Europe.
#95244
A
solving
B
to solve
C
solved
D
solve
Sue had her luggage _________ an hour before her plane left.
#92319
A
check
B
checking
C
to check
D
checked