问题
选择题
The companies are working together to create ____ they hope will be the best means
of transport in the 21st century.
A．that
B．what
C．which
D．who
答案
答案：B
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The companies are working together to create ____ they hope will be the best means
of transport in the 21st century.
A．that
B．what
C．which
D．who
答案：B