I choose to shop __________ because it saves time and effort.
| A．on the air | B．on the Internet |
| C．on TV | D．in magazines |
Thank you for all your hard work last week. I don’t think we it without you.
| A．can manage | B．could have managed | C．could manage | D．can have managed |
The first decade in the 21st century _______ the rapid rise of China as a world economic power.
| A．witness | B．has witnessed | C．will witness | D．have witnessed |
Those who suffer from heart trouble will find they get _______ from this medicine.
| A．defense | B．safety | C．shelter | D．relief |
many times, but he still didn’t understand it.
| A．Having been told | B．Though he was told |
| C．To have been told | D．He was told |
That was a very busy street that I was never allowed to cross accompanied by an adult.
| A．when | B．if | C．unless | D．where |