--- Why not go and have dinner in a restaurant? --- _______. It’s too expensive.
The Greens ______ us with dinner the day before yesterday.
—Can I run around here? —______. Don’t you know the school rules?
—Which seat shall I take? —Please take ______ seat you like.
After breakfast, little Tony went to school by bicycle as ______.
Children are always curious ______ the unknown world.