6. ---Do you mind my opening the window? It’s a bit hot in here.
---____________, as a matter of fact.
A. Go head B. Yes ,my pleasure
C. Yes, I do D. Come on
7. Would you like to _____us in running? We are going to_____ the sports meet soon.
A. join ; take part in B. take part in; join
C. attend ; take part in D. join; take part
