You should keep the window _________ because the room is so hot and damp.

What are you going to do in the future? –I am dreaming of opening up my ________ company.

Would any one of you please tell me ______ to the railway station?

That’s the third time he’s won the award in this field.— Yes. He ______ his maximum potential in the past decade.

Han Mei often helps him _______his English. [ ]