It is no use _________ to persuade him ________ smoking because he has been addicted to it since he wasyoung.
I am sure that if you _____________ your time, you’ll achieve greater success.
The policeman warned us ___________ believe such liars again.
“China is still a developing country ___________.” said Premier Li at the conference.
We will keep you _____ of our progress and look forward to hearing from you..
Whatever I explained to them, they insisted ________ to the party.