在下列各句的空白处填入一个最恰当的单词，使句子意思完整，语法正确。 1.  My pen is broken.  Can you l_______ me your pen? 2.  There are too many cars in front of the cinema.  I can't find a place to p______ my car. 3.  You'd better make a d _______  answer to the questions.  Don't say other things. 4.  Soldiers must obey o_______ If they don't, they will be published. 5.  I w ___ who cleaned the classroom without telling me. 6.  May I t _______ you to pass me the salt,  please? 7.  The guide l __ us through the park. 8.  Don't say that to her, or you will o __ her.  She'll be angry. 9.  There are some c __ reasons why this information can't be made public. 10.  The teacher is teaching us the s __ of the human body in the biology lesson.