Ⅰ.单词拼写
1．You should keep your eyes on and ________ (记录) your loss of your house.
2．They should ________ (监视) their websites better so that children do not sign up too early.
3．Many lessons are now ________ (可获得的) online, from which students can choose for free.
4．These actions have greatly affected the ecological ________(平衡).
5．The competition ________ (需要) every participant writing a brief introduction of himself/herself in advance.
6．The chief editor of this famous magazine is really a ________ (大师) of modern literature.
