It takes ___________two hours _________his homework.
Usually, I go to fly a kite in the country with my cousin on a ______ day.
---I am going to Mount Tai on Sunday with my parents.---____________
The girl is young. She doesn’t know the way ______ home.
---It’s so hot. Why not ______ swimming?---It’s a good idea. Let’s go.
Please be careful when you walk ______ the street. There are so many cars.