27.At last, the boys found themselves in a pleasant park with trees providing shade and____down to eat their picnic lunch.
“China is still a developing country ___________.” said Premier Li at the conference.
The policeman warned us ___________ believe such liars again.
I am sure that if you _____________ your time, you’ll achieve greater success.
He got home late ____________ the traffic was heavy.
I think it was his attitude ___________ annoyed the teacher.