Only when___________ according to the directions can the medicine be quite effective.
| A．taking | B．taken | C．being taken | D．having been taken |
Where were you at lunch time? I ________ a seat for you in the dining hall.
| A．saved | B．was saving | C．had saved | D．have saved |
When a disaster occurs, all people, ________ they are old or young, rich or poor, try their best to help those in need.
| A．no matter | B．whether | C．however | D．even though |
A trend_______ that 3D films will become more popular ever since the film Avatar hit the market.
| A．has arisen | B．arose | C．is arising | D．will arise |
The time is not far away ________ modern communications will become widespread in China’s vast countryside.
| A．that | B．until | C．before | D．when |
He managed to reach the summit of his career, but it was at the ________ of his health.
| A．consumption | B．consequence | C．expense | D．evidence |