John couldn’t take part in the activity held at the cultural center yesterday for _____ reasons.
| A．series of | B．all kinds | C．the number of | D．a variety of |
He used to have nothing for breakfast,________?
| A．usedn’t he | B．didn’t he | C．did he | D．must he |
Nobody phoned while I was out,________?
| A．did they | B．didn’t they | C．did he? | D．didn’t he |
Everything is ready,________?
| A．aren’t they | B．isn’t it? | C．isn’t everything | D．are they |
I don’t think Mary is angry with you,________?
| A．do I | B．is she? | C．isn’t she | D．don’t I |
I suppose he ought to have known that,________?
| A．don’t I | B．oughtn’t he | C．do I | D．ought he |