_________ buy an English dictionary.

70.我爸爸过去常常开车上班，现在坐公交车了。

My father_____________ go to work by car, but now he takes the bus. 71.大家正盼望着暑假呢。

We_____________ the summer holiday. 72.我一读完这本书就还给你。

I will return the book to you___________________ it. 73.北京园博园每天下午六点才关门。

Beijing Garden Expo Parks______________________ six o'clock in the afternoon every day. 完成句子：

69, You'd better 70, used to

71, are looking forward to 72, as soon as I finish reading 73, won't close until