Don’t speak loudly on the bus. You should keep your _________ down.
body
voice
interest
service
My grandfather devoted all his time ______ poor children.
It’s very nice _____ you to give me so good ____.
.—Have you finished your fashion design? ---Not yet. I’ll finish it if I__ten more minutes.
The doctor will return from Macao ______ a few days.
There is no doubt _______ your answer is right.