五、动词填空：（5小题5分）
51、He found the word_______(write) wrong as soon as he turned to the page.
52、I’ll write to you after I ______(arrive) there.
53、He _______(make) _______(do) the exercises again as he didn’t do them carefully enough.
54、Harris began______ (work) when he saw the boss ______(come).
55、Robert _____________(not finish) _________(do) his lessons until his father returned home.