We should try our best to help the animals_______.

ver he is, he makes ______ a rule to give his mother a call every day.

The criminal was very cunning(狡猾). We have to make a search of the forest so that he won’t escape again.

I don’t want any of the three books because I find＿＿＿of them useful for my study.

Scientists said that the winter of 2011 was _____ cold, and in fact it was much colder than predicted