请根据括号内汉\英语提示或已给的首字母写出单词的正确形式。
小题1:To our surprise , he made no ____________（解释）of his absence.
小题2:Tibet is a ____________（多山的） province .
小题3:U______________, my computer system broke down again .
小题4:The learner of a second language has many difficulties to ___________(克服)
小题5:His experiment ended in _______(失败).
小题6:He returned from Paris and found his office was under someone else’s________(占领)．
小题7:At that time, hunger was a ______ problem in many countries.（令人不安的）。
小题8:He has made a________(总结)of the main points in the professor’s speech.
小题9:He made some ________(评论)about my dress，and then carried on reading his book.
小题10:Though he is young, he is s_________ to support a large family. (努力)
小题1:explanation
小题2:mountainous;
小题3:Unfortunately
小题4:overcome
小题5:failure
小题6:occupation
小题7:disturbing
小题8:summary
小题9:comments
小题10:struggling
小题1:make no explanation of“不解释”，句意是：使我们惊讶的是,他对自己的缺席没有做出解释。
小题2:“多山的”是mountainous; 它是由mountain变来的，句意是：西藏是个多山的省份。
小题3:根据首字母和句意可知填Unfortunately，句意是：不幸的是，我的电脑系统崩溃了。
小题4:“克服”是overcome，句意是：学习第二语言的人有很多困难要克服。
小题5:“失败”名词是failure ，动词是fail,end in failure是以失败告终。
小题6:“占领”occupation ，under one’s occupation是“被…占领”。句意是：他回到巴黎，发现他的办公室被占领了。
小题7:“令人不安的”是disturbing ，句意是：当时，饥饿是让人不安的难题。
小题8:made a summary of 是“总结”,句意是：他对教授演讲中的重点进行了总结。
小题9:made some comments about 是“对…做评论”，句意是：他评价了我的衣服，然后继续读书。
小题10:“努力”是struggle，虽然他年轻，但是要努力养活一家人。