By the time they arrived at the station, the train .
| A．will leave | B．would leave |
| C．has left | D．had left |
Thank you for ________ the story.
A. tell B. to tell C. telling
What’s your hobby? ________________.
A. Swimming and run B. Swim and run C. Swimming and running
I can’t ________ a bike. I want to have a try.
A. take B. ride C. do
The students of Class Three _________ on the playground.
A. be B. are C. is
Tony and Betty _______ new students.
A. am B. is C. are