I,along with my sister,__ going to Shanghai next month.
A. am
B. are
C. is
D. be
All of the people in the country __ been prepared for the great reformation.
A. has
B. have
Most of the water here __ clean.
A. is
B. are
80% cotton ___ been sent to America.
A. has
B. have
C. is
D. are