31. ______matters most in learning English is enough practice.
_______ the morning of my mother’s birthday, I usually help my mother do some housework.
You ‘d better not phone the manager between 7 and 8 tomorrow evening; he _____ an important meeting then.
---Where will you start your work after graduation?---Mmm, it’s not been decided yet. I ______ continue my study for a higher degree.
---Mum, have you seen my mobile phone?---_______ you bought last week? I’m afraid I haven’t seen _______.
Only by hard work _________ learn English well.