问题补充：
It is recommended that the project until all the preparations have been made.
A. is not started
B. will not be started
C. not be started
D. is not to be started
答案：
A. is not started
B. will not be started
(答案→)C. not be started
D. is not to be started
解析：考查虚拟语气。句中recommend作“建议”讲，从句用should + v原形，should可以省略。句意：建议项目应当开始直到所有的准备都做好了。
