(用所给词的正确形式填空) Now she likes playing volleyball very much，but she _________ (like) playing volleyball when she was at primary school．

(翻译句子) 睡觉之前你必须完成所有的作业。

You must finish all your homework __________ __________ _________ __________ __________.

(用 while 或 as 填空) My mum was cooking __________ my dad was reading newspapers．

(用 while 或 as 填空) __________ he finished the speech，the audience clapped their hands．

(用 while 或 as 填空) _________ I was walking down the street I saw a police car．

(用 while 或 as 填空) John came in __________ I was typing a letter．

(用 while 或 as 填空) We were watching TV ________ my mother was cooking in the kitchen．

（用适当的介词填空） Can you swim _________ the river?

（用适当的介词填空） There's no secret __________ you and me．

（用适当的介词填空） We have no lessons __________ 3:50 p.m．and 4:50 P.m．every day．