41.We'll wait till you _______(make)up your mind.
41.We'll wait till you _______(make)up your mind.
42.They ______ just _______(talk)about you.
43.Where _____he ______(be)?He _________(be)to the bank.
44.______ you______(visit)the Science Museum?---Yes,I________.
45.______she ______(tell)you the good news?---No,she _______.
46.How long _______ your mother _______(teach)English in this school?---For ten years.
47.We _______ already _______(draw)five pictures.
48.My grandson ______________(be)ill for a week.
49.________ the train _________(arrive)?---No,not yet.
50.Our physics teacher ____________________(not come)to work today,because he is ill.