专四语法真题集
I.独立主格构造
Agriculture is the countrys chief source of wealth,wheat ______ by far the biggest cereal crop.
a. is b. been c. be d. being
2. Time ______,the celebration will be held as scheduled.
a. permit b. permitting c. permitted d. permits
3. There ____ nothing more for discussion,the meeting came to an end half an hour earlier.
a. to be b. to have been c. being d. be
4. _____ no cause for alarm,the old man went back to his bedroom.
a. There was b. Since c. Being d. There being
The coun ...


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