We think Betty the best student. The sentence structure is ______.
Betty will ring me up as soon as she ________ in Shanghai.
I have been to London. I ____________ there last month.
—Who listens _________, Eric , Brad or Rick? —Of course Brad.
– does your father go to work? -- By bus.
—Mum, I can't find my football. —Hurry up! Your father ______ for us.