Agriculture is the country’s chief source of wealth, wheat ____ by far the biggest cereal crop.
举一反三
- 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. (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: een C: e D: eing
- 中国大学MOOC: Agriculture is the country’s chief source of wealth, wheat ____ by far the 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