-- Do you have any idea________?
-- Most people think it is the terrible weather. And I think so.
| A．which is the way to the laboratory |
| B．when is the perfect time to visit Stonehenge |
| C．why did he stay there |
| D．what often causes an accident |
According to Ma Yun, great changes ________ in the field of online business in the1990s.
| A．took place | B．were taken place |
| C．happened | D．were happened |
Although it has rained heavily all the morning, the kids ________having P.E. classes on the playground because they will have an exam soon.
| A．put off | B．are not against |
| C．are used for | D．are absent from |
My parents and I have a(n) ________ time watching the film The Fury because everyone in the family is so excited about war stories.
| A．pleasant | B．Suitable |
| C．important | D．Uncomfortable |
In summer, food goes sour easily ________ it isn’t put in the fridge.
| A．unless | B．if | C．until | D．Though |