If you want a ticket for a round-trip, you’ll have to pay____$80.
It's very difficult to learn English well, but you can't _____.
The sweater fits me well, but it is _______ expensive.
“Excuse me, could you tell me where the department store is?” sounds ______ than “Where is the department store?”
---I wonder if they ______ a party on the coming Christmas Eve.---If they______, I am sure they’ll invite us to take part.
--- The car ran ______ me quickly. --- Woe! How dangerous!