I told you _______ that car, and now look what’s happened.
| A．not buy | B．don’t buy | C．not to buy | D．not buying |
The trains leave every 15 minutes; if you miss ____ , you don’t have to wait long for another.
| A．it | B．this | C．one | D．some |
Mr. Sawyer started his career at Stanford University, _____ he became Professor of Physics in 2002.
| A．which | B．where | C．when | D．that |
–Peter, do you know how to download the new software?
–Certainly. I _____ you the steps.
| A．show | B．am showing |
| C．will show | D．have shown |
_____ you have any disagreement, we will carry out the plan next week.
| A．Unless | B．Though | C．However | D．When |
The singer’s music video _____ nearly 9 million times since it was posted on the Internet four weeks ago.
| A．viewed | B．was viewed |
| C．has viewed | D．has been viewed |