He showed his approval by smiling broadly.
Sam always tried hard to win his father's approval.
Does the wine meet with your approval?
I hope this meets [with] your approval and I am looking forward to hearing from you as soon as possible. (First Certificate in English; B2; Polish)
The project has now received approval from the government.
The teacher gave the student a nod of approval.
Besides the questionable approval given by governmental authorities, the situation might be useful to us. (First Certificate in English; B2; Spanish)