第28题:[单选题] It was his nervousness in the interview _____ probably lost him the job. A. which B. since C. that D. what 参考答案:C 本题考查的是强调句式,强调句式由“it is/was+被强调部分+that” 构成。被强调成分为 his nervousness in the interview。故选C。
第29题: [单项选择]What the leader does and says ______ of great importance. A. is B. was C. are D. were 参考答案:A 答案解析:在一般情况下,由what引导的主语从句放在句首时,主句谓语用单数形式,故排除C,D项。而在该主语从句中,谓语动词用了一般现在时,为保持全句时态一致,主句的谓语动词也应用一般现在时。