Have you ever seen Tom recently— ____. He often goes on business in Canada.

I wonder_____ they will pass the exams or not.

In our country, the number of people who __________ carsincreasing.[ ]

When the mother realized what had happened to her child, she ________ her face in her hands. So no one could see her expression.

Nanjing isn’t so large Shanghai. However, it’s the second city in East China.