This cake is very sweet. You______ a lot of sugar in it.
A should put B could have put C might put D must have put
32．Peter was sure that he drank any more of this good red wine he would fall asleep.
| A．if | B．when | C．as | D．Since |
31．Children above 12 are able to take part in skiing or other activities____for them.
| A．having designed | B．designing | C．to design | D．Designed |
30．People aren’t waching____television as before on Christmas Day because they use their videos.
| A．too much | B．too many | C．as much | D．as many |
29．Mr Brown arranged for the taxi to come at six_____she would not have to wait long at the station.
| A．so that | B．even if | C．before | D．Because |
28．He spent much of the evening with Robert Green,____he had hardly seen in the thirty years since they had worked together at CBS.
| A．what | B．that | C．who | D．Whom |