---Could you tell me _______?
---Sorry，I have no idea. .
| A．when does the History Museum open | B．when the History Museum opens |
| C．when did the History Museum open | D．when is the History Museum open |
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．/:／ |
Look, the Maths teacher with his students _________on the grass to have a good rest at present.
| A．is lying | B．is lieing | C．are lying | D．be lying |