根據(jù)句意和所給首字母補(bǔ)全單詞
1.His father is an e_____,and he designs ( 設(shè)計(jì)) a lot of bridges.
2.The Chinese g_____didn't want a foreigner for a Chinese railroad.
3.It was difficult to build the railroad because there were a lot of bridges and t_____.
4.Mr. Smith is the h_____of Mrs. Smith.
5.Yang Liwei is a great a_____in China.