________Switzerland (瑞士) is very small , _______it is the land of watch and it is very rich.
These beautiful photos _______ on the Great Wall last week.
Don’t turn on the radio. Your father ______ now.
Granny often tells us _______ water in our daily life.
Mr. Wang is a teacher. He ______ in this school for 20 years.
—Mum, when shall we go shopping? —After I finish _______ the clothes.