Do you know when the first train __________ in China? A. was produced B. is produced C. Produced
Ann is a careful girl. She always goes over her exercises to____ there are no mistakes.
To be healthy, one must have at least _____ sleep every day.
There are forty students in Class Four. And of them girls.
The Greens left London a sunny morning.
Your Ipad is quite nice. Where did you buy______? I want to buy______, too.