【答题库最新整理国开(电大)人文英语3-1379网上形考机考题库】We consider it necessary ______ Tom should improve his behavior.

【答题库最新整理国开(电大)人文英语3-1379网上形考机考题库】We consider it necessary ______ Tom should improve his behavior.
选择一项：
A. which
B. that
C. what
译文：汤姆应当改进他的行为举止，我们认为这是必要的。