-- May I go out now. Dad? -- No. You __ let your mother know first.
—____ ?—I’m twelve.A. How are you?B. How old are you?C. How do you do?
Tom often mentions_______his good friends.But his friends avoid _______him .
The desks are made_______wood. Wine(酒) is made____grapes.
—There is a bridge ______ the river, and a plane is flying _____ the clouds in the picture.
It is_______that______ the students in my class is 60 and ______ students like sports.