19．Do you know where _____？I have something to tell him．（ ）
A．the head teacher's office is B．is the head teacher's office
C．the head teacher's office was D．was the head teacher's office
分析你知道校长办公室在哪⾥吗？我有事要告诉他．
解答答案：A 根据Do you know where _____？再结合选项，可知：Do you know 后⾯是宾语从句，宾语从句的语序应该是陈述语序，即主语+谓语，故排除B，D；根据I have something to tell him．我有事要告诉他．表明是现在，可知宾语从句应该⽤⼀般现在时态，故排除C，故选：A．
点评主要考查宾语从句，应该注意宾语从句的引导词，以及宾语从句的时态和语序问题，掌握好这⼏点，是做好此类题⽬的关键．本题主要考查宾语从句的时态和语序．
