Ⅰ.课文单句语法填空[在空白处填入适当的内容(1个单词)或括号内单词的正确形式]
1．Look at these pictures. In pairs discuss ________ they have in common.
答案 what what在此引导宾语从句，并充当have的宾语。
2．________ time, I have been changed quite a lot.
答案 Over over time“随着时间的流逝”。
3．________I was young I could simplify difficult sums.
答案 Although 句意：尽管我很年轻，但我能够简化复杂的数据。由句意可知应填although。
4．I ________(develop) very slowly and it took nearly two hundred years before I was built as an analytical machine.
答案 developed 由and后“took”一词可知空处也应用过去式，故填developed。
