问题补充：
We are not ready to go into production yet. The new machine isn’t fully .
A. worked out
B. turned out
C. left out
D. tested out
答案：
A. worked out
B. turned out
C. left out
(答案→)D. tested out
解析：短语辨析。A锻炼，计算除，制定；B结果是，证明是；C遗漏；D对…彻底检查。句意：我们还没有准备好投入生产，新的机器还没有被彻底检查
