英语专业四级(TEM-4)1994-2007年:语法真题集总结
I.独立主格结构
1. Agriculture is the country’s chief source of wealth, wheat ______ by far the biggest cereal crop.
a. is b. been c. be d. being TEM-4 2003
2. Time ______, the celebration will be held as scheduled.
a. permit b. permitting c. permitted d. permits TEM-4 2003