---How often does she have dancing classes?
---_________.
A. On Saturday afternoon
B. At 9 o’clock
C. Once a week
---Look at the boy running on the playground. Is it David?
---It ______ be him. I saw him go to the teachers’ office just now.
| A．mustn’t | B．can’t | C．couldn’t | D．must |
---How long __________ your parents ___________?
---For about twenty years.
| A．did, marry | B．have, married |
| C．have, got married | D．have, been married |
The weather in Hong Kong is quite different from __________ in Beijing.
| A．it | B．them | C．that | D．those |
What_____you_____at nine yesterday morning?
| A．have, done | B．did, do | C．were, doing | D．do, do |
Jim is____ honest boy. We won’t play _____chess with him any more.
| A．an, the | B．a, / | C．a, the | D．an, / |