(改错) My mother was cooking if my father was reading a newspaper．

(改错) He ordered his students stay in the classroom．

(用所给动词的适当形式填空）Though he was very tired,he kept ______(work)．Because he must finish it before five．

(用所给动词的适当形式填空）I saw the traffic accident ________(happen)yesterday．

(用所给动词的适当形式填空）What would you like ______(be)when you grow up?

(用所给动词的适当形式填空）If you want ________(learn)English better,you should practise ________(speak)English often．

(用所给动词的适当形式填空）Hello Kitty waved to the visitors while she ________(dance)to the music．

(用所给动词的适当形式填空）Our teacher told us __________(not get)to school late next time．

(用所给动词的适当形式填空）We spend lots of time __________(do)our homework．

(用所给动词的适当形式填空）I ________ (do)my homework when the door bell ________ (ring)．