—Do you mind my opening the window? It’s a bit hot in here.
— , as a matter of fact.
| A．Go ahead | B．Not at all |
| C．Yes, I do | D．No problem |
--- I beg your pardon, but I didn’t quite catch you.
--- Oh, I ______ myself.
| A．am talking to | B．talked about |
| C．have talked to | D．was talking to |
He ______ at the meeting, but his heart attack prevented him.
| A．will speak | B．is going to speak |
| C．had to speak | D．was going to speak |
Remember to send me a photo of us next time you ______ to me.
| A．are writing | B．will write |
| C．has written | D．write |
--- I ______ so busily recently that I ______ no time to help you with your math.
--- That’s OK. I can manage it by myself.
| A．have been working; have |
| B．have worked; had |
| C．am working; will have |
| D．had been working; had had |
--- Oh, dear. I forgot the air tickets.
--- You ______ something.
| A．have left | B．are always leaving |
| C．are leaving | D．always left |