请认真阅读下面短文，并根据各题所给首字母的提示，写出一个合适的英语单词完整、正确的形式，使短文通顺。

Dear Miss Zhang,

I have a problem and I want your advice .I am a boy of 17.I love my father,yet I cannot find any (1)c_____to talk with my father. Is a businessman and he is too busy (2)a       work. During the morning, he is still sleeping while I hurry to school.In the evening ,I have (3)g     .

to bed when he comes back home. We only have dinner together once or twice a week, and hardly ever spend our (4)s         time together. In (5)f          ,We hardly ever have time to have a talk. When I try to talk to my father , he only gives short answers and shows very

(6)l        interest. Now I feel a little strange about my father and I admire my classmates  (7)b      they have kind and friendly father .I am a boy ,you know father (8) p        a very important role in a boy’s growth. I wish I could have a warm talk with my father. Can you(9) o     me some suggestions? They would be most (10) v           .Thanks a lot.

某建材供应商与某货运公司中签订了钢材运输合同，该合同履行中先后发生了多次变更。在钢材运输过程中，建材供应商因销售合同变更要求货运公司变更交货地点，并承担货运公司增加的运输费用。

上述合同的变更不包括( )。

A．主体变更
B．客体变更
C．权利、义务变更
D．内容变更