完成句子。

1．If you use copyrighted music________,it is illegal even though you do not make a profit from it.（permission) 如果你未经主人允许使用注册版权的音乐,即使你没有从中获利也是违法的. 2．These photos________when I lived with my grand- mother.（remind) 这些照片使我想起了我的童年,那时候我和祖母住在一起. 3．No matter what happens I________and tell you the truth.（keep) 不管发生什么,我都会遵守诺言并告诉你真相. 4．He stood there,keeping silent.________he didn't know the answer to the teacher's question.（obvious) 他站在那里,保持沉默.很显然他不知道老师所提问题的答案. 5．The Dragon Boating Day________Qu Yuan.（memory) 端午节是为了纪念屈原. 6．If the neighbors do not give any sweets,the children________.（trick) 如果邻居不给任何糖果,孩子们可能会捉弄他们. 7．You must________.（apologize) 你必须因迟到向老师道歉. 8．The meeting will be started in five minutes.However,up till now,he________.（turn) 会议五分钟后开始.然而,直到现在,他仍未出现. 9．I can't find my keys anywhere.I________while playing basketball.（may) 我哪都找不到我的钥匙.我可能在打篮球的时候把它弄丢了. 10．After he________Father Christmas,he set off,followed by a group of children.（dress) 他装扮成圣诞老人后就出发了,后面跟随着一大群孩子.