03-51 Agriculture is the country’s chief source of wealth, wheat ____ by far the biggest cereal crop.
A: A. is
B: B. been
C: C. be
D: D. being
A: A. is
B: B. been
C: C. be
D: D. being
举一反三
- Agriculture is the country's chief source of wealth, wheat ____ by far the biggest cereal crop. (TEM4-2003-41) A: is B: been C: be D: being
- Agriculture is the country's chief source of wealth, wheat ______ by far the biggest cereal crop. A: is B: be C: to be D: being
- Agriculture is the country’s chief source of wealth, wheat ____ by far the biggest cereal crop.
- Agriculture is the country’s chief source of wealth, wheat ____ by far the cereal crop.( ) A: be B: been C: being D: is
- Agriculture is the country's chief source of wealth, rice ______ by far the biggest cereal crop. A: is B: been C: C. be D: D. being