—I didn’t know this is a one-way street, sir.—______. Please show your driving license.
Xian, the ancient capital of the six dynasties, is becoming ________ international city and attracts more and more foreign tourists every year.
通常我们不宜问Mrs. Green:
I have no brothers ___________sisters.
How many ____ are there in the picture?
Tom is in Class 1 and I am in Class 2. ______ are not in the same class.