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- Could you tell me_______？
- Every four years.
| A．how often the Olympic Games take place |
| B．when the Olympic Games are held |
| C．how often are the Olympic Games held |
| D．how often the Olympic Games were held |
We carefully compared the result of the first experiment with_______ of the second one.
| A．it | B．that | C．the ones | D．this |
_______ he is very young, _______ he knows a lot about how to be healthy.
| A．Though; but | B．Although; but | C．／;but | D．Although;／ |
Chinese students must_______ their hands first and then _______ to speak in class.
| A．raise; rise | B．raise; raise | C．rise; rise | D．rise; raise |
Simon usually plays_______ guitar on Sunday morning and plays_______ chess on Sunday afternoon.
| A．the; the | B．the; ／ | C．／;the | D．/:／ |