— It’s really kind of you to care for my pet dog while I was away for the whole year.— _______. The dog is loyal. We’ve been close friends.
Aron water five days later.
This is______difficult problem that few students can work it out.
.He lives_______in the______village, but he is never_______.
Pollution is a serious problem. Scientists have _______ some good ways to save it.
We can’t put off _____ a plan .