单词拼写
根据括号内的汉语，结合句子的意思，在横线上写出形式正确的英语单词，每个空格只准填一个单词．
Though he is old, he always dresses ________(整洁)．
At that time they sent message almost by ________(电报)．
The train ________(减速)down as it went around the bend．
This hill is too ________(陡峻)to ride up on a bike．
He ________(吐唾沫)to his neighbours because they laughed at him．
The meeting will begin after the worker ________(安装)the microphone and the speakers．
When we got there, they were ________(说起)you．
You two must stop ________(争吵)．You should be friendly to each other．
The new house has two ________(书房)inside．
Can you show me the way to the ________(博物馆)？