】用所给词的适当形式填空:1. Three quarters of the population _______ (be) Chinese.2. The population of China _______ (be) 1.3 billion.3. Have you ever ______ (be) to Japan?4. How long ____________ you ____________(be) in class today?5. We should practice _________ (speak) English every day.6. How long has she ________(study)English?7. The best way _______ (get) there is to take a bus.8. He doesn’t have any problems _________ (f |