单选题
Mike has already put forward his suggestion ______ a production plan should be completed next week.
【正确答案】
D
【答案解析】[解析] 句意：迈克已经提出生产计划应在下周完成的建议。同位语从句。本句是一个同位语从句，句中“a production plan should be completed next week”是“suggestion”的补充说明，同位语从句常常用that引导，因此应选D项。