－When will the expert e and give the lecture on economic development
－Not until our program by the government
A. approves
B. is to approve
C. will be approved
D. has been approved
网友回答
A. approves
B. is to approve
C. will be approved
(答案→)D. has been approved
解析：考查时态语态：句意：--什么时候专家来给我们做经济发展的讲座？--直到我们的项目被政府批准。因为not until后面不能用将来时，用一般现在时或现在完成时，而且our program和approve是被动关系，选D。