一Are the two parents from the USA? 一No.They are from England.
We should often keep _____ touch with each other, because we are good friends.
—Do you think a radio is useful in learning English?—Sure. A radio can _____ listening English songs and reports.
—Do you know _____?—Sorry, I don’t know.
_____ the morning of December 1st, 2006, the 15th Asia Games _____ in Doha(多哈).
There are fifty students in our class, _____ of us _____ football.