用括号内所给动词的适当形式填空。
【小题1】---Where is Jim? --- He has gone (go) to Shanghai.
【小题2】Jimmy was reading (read) a science book when I came into his room.
【小题3】It is twenty years since the bridge was built (build).
【小题4】The goal of the game is to test (test) your knowledge of English grammar.
【小题5】If you double-click on the icon, the web page will appear (appear) on the screen.
【小题6】Spring is the best time for visiting (visit) Chinese gardens.
【小题7】I often hear her sing (sing) in her beautiful voice.
【小题8】Look! How beautiful our city looks (look)!
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解析：要根据时态和人称，以及相应单词词性的变化，可得出正确的单词。