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