A great number of students said they were forced to practise the piano.
| A．to question | B．to be questioned |
| C．questioned | D．questioning |
Darwin counted 225 flowering plants, ________ he collected and brought home 193.
| A．that | B．in that | C．of which | D．all of which |
When somewhat better ________ academically, he returned home to continue his research.
| A．equipped | B．had equipped |
| C．provided | D．providing |
This new teaching approach is specially ______ to develop children’s problem-solving skills.
| A．designed | B．devoted | C．concentrated | D．hoped |
The opening ceremony of Beijing 2008 Olympics is a great success, which is believed ________ the Chinese splendid civilization.
| A．having been displayed | B．to have displayed |
| C．to be displayed | D．displaying |
The government has taken some measures to reconstruct the earthquake-hit areas, but it must be some time ________ everything returns to normal.
| A．since | B．after | C．unless | D．before |