.Mr. Black has been teaching English in a middle school _____ he came to China.
| A．for ever | B．ever since | C．ever before | D．long before |
He is really nervous. He ______ back and forth all the night waiting for the results.
| A．had walked | B．has been walking |
| C．walked | D．is walking |
With the word “Tuhao” ______ appearing in media reports, people pay greater attention to rich people’s life.
| A．simply | B． constantly |
| C．generally | D．consequently |
The App WeChat provides a networking platform ______ communication is faster and easier.
| A．why | B．which | C．when | D．where |
Amy ______ better last night, but she was a little nervous and didn’t reach her best standard.
| A．could perform | B．must have performed |
| C．should perform | D．could have performed |
The hotel is ______ easy reach of the town centre. It’s only a tenminute trip.
| A．against | B．beyond | C．within | D．beneath |