to look forward to
The preposition is part of the word. Without it the answer is wrong in ripiti: zich verheugen op, not zich verheugen.
On the card “to look forward to”, ripiti also accepts uitkijken naar.
Remember zich verheugen op for good. ripiti brings the word back just before you forget it, with these sentences. Free, no account needed, works offline.
practise zich verheugen op in ripiti