The windows must _________ before you leave the room.
| A．be closed | B．are closed | C．close | D．be close |
—We can give you a ride into town.
—_______ Thank you.
| A．Yes, why not? | B．Oh, it would be my pleasure. |
| C．Yes, please. | D．Oh, that would be great. |
— Do you mind me _______ here?
— ________. Take your seat, please.
| A．to sit; No, I do | B．sitting; Yes, of course |
| C．sitting; No, not at all | D．sitting; Yes, of course not |
Why not leave the door _______? I think the air in the room smells bad.
| A．opening | B．opened | C．open | D．to open |
Don’t try to do everything at once. Take it a bit _______.
| A．at times | B．at that time |
| C．at all times | D．at a time |
—_______ they _______ the book _______ to the library yet?
—Yes, they have.
| A．Have; returned; / | B．Have; returned; back |
| C．Did; return; / | D．Did; return; back |