—____ your sister know Tom? —No, she ____.
It is reported that people throw_____plastic bags along this street every day.
-Mr Green has_____one-year-old son,doesn’t he? -Yes,and he also has______eight-year-old daughter.
It will______us several years to learn a foreign language well.
-_____the population of China? -_______over 1,300,000,000.
We have a lot of work______today.