One of the rules is that under no circumstances _______to bring food, drink or chewing gum into the school.
| A．students are allowed | B．allow students |
| C．are students allowed | D．students be allowed |
Occasions are quite rare ________ I have the time to spend a day with my kids.
| A．who | B．which | C．why | D．when |
Because of the financial crisis，days are gone ________ local 5－star hotels charged 6,000 yuan for one night.
| A．if | B．when | C．which | D．since |
Children who are not active or ________ diet is high in fat will gain weight quickly.
| A．what | B．whose | C．which | D．that |
The days are gone ________ physical strength was all you needed to make a living.(2011·天津，10)
| A．when | B．that | C．where | D．which |
Ellen was a painter of birds and of nature，________，for some reason，had withdrawn from all human society.(2012·浙江，17)
| A．which | B．who | C．where | D．whom |