完形填空，阅读下面短文，掌握其大意，然后在所给的四个选项（A、B、C和D）中选出一个最佳选项。
As a teacher, I think all students were dear to me, especially Mark.
Mark was very talkative, I had to ________ him repeatedly that talking without________was not acceptable. Every time I had to correct him for misbehaving. “ Thank you for correcting me, Sister!”________ I became accustomed to hearing it many times a day.
Once my________ was running out when Mark talked again, I ________two pieces of tape(胶带) and made a big X with them over his mouth. When I ________the tape, he still thanked me for correcting him.
One Friday, I asked the students to________the names of the other students on two pieces, leaving a ________between each name, and then write down the ________ thing they should say about others.
Then I________ all the lists and gave each student his or her list. Soon the entire class was smiling. “ I never knew that ________anything to anyone!” “ I didn’t know________liked me so much!” Mark said, “Thank you for keeping me________, Sister.”
Later Mark joined the army and was________in Vietnam. After the funeral(葬礼), his father showed me something________on Mark. It was pieces of notebook paper that had________been taped and folded many times, on which were the good things that Mark’s classmates had said about him. His mother said that he behaved better and better________ my list.
Mark’s classmates told me that they kept their own lists in ________ways. Hearing this, I finally cried.
Sometimes the ________things could mean the most to others. We forget when life will end. So________ the people you love and care about, before it is too late.

A．comfort B．guide C．remind D．command

A．arrangement B．permission C．reason D．accuracy

A．Long ago B．Long after C．Long before D．Before long

A．skill B．time C．confidence D．patience

A．tore off B．broke down C．put away D．showed up

A．set B．removed C．get D．took

A．search B．ensure C．list D．plan

A．space B．hole C．chance D．words

A．worst B．first C．diverse D．nicest

A．repeated B．spelled C．changed D．organized

A．meant B．explained C．brought D．expected

A．friends B．people C．others D．students

A．informed B．warned C．cured D．accused

A．saved B．killed C．surrounded D．trapped

A．found B．written C．stolen D．examined

A．quickly B．obviously C．exactly D．properly

A．except for B．instead of C．in spite of D．because of

A．necessary B．useful C．differnt D．exciting

A．smallest B．biggest C．best D．strongest

A．evaluate B．forgive C．praise D．thank