【正文】
語法復(fù)習(xí) — 過去完成時(shí) 1. We _______ (get) everything ready before they came. 2. By the time she got to the bus stop, the bus ______ (leave). 3. Betty had ___________ (買 ) a backpack for two days before she went traveling. 4. You never told me you _______ (see) the film before. 5. When I turned on TV, the film __________ (開始 ) for fifteen minutes. Task 4 根據(jù)句意及所給提示,用單詞的正確形式填空。 Edison hadn’t built a chemistry lab by the time he was ten. 到愛迪生十歲為止,他還沒建一個(gè)化學(xué)實(shí)驗(yàn)室了。 . When we got there, the film had finished.