Ⅰ.单句语法填空
1．Nowadays, cycling, along with jogging and swimming, ________ (regard) as one of the best allround forms of exercise.
2．No matter how bright a talker you are, there are times when it's better ________ (remain) silent.
3．Christmas is the most important festival in the western world. It ________ (fall) on December 25.
4．All we need ________ (be) a small piece of land where we can plant various kinds of fruit trees throughout the growing seasons of the year.
5．________ (run) is cheap, easy and it's always energetic.
