I failed in the job interview and only then _____ the importance of learning English well.
| A．I realized | B．I had realized | C．did I realize | D．had I realized |
For many years we have been keeping in ____by sending each other e-mails or phone calls.
| A．connection | B．contrast | C．relation | D．touch |
____ you read English easily, you’ll find it’s another cup of tea to make conversation in English.
| A．Because | B．As though | C．Even if | D．Whether |
To prepare for the Olympic Games in summer, London ____ its largest ever exercise to test the response of emergency services.
| A．planned | B．is planning | C．had planned | D．plans |
Saving and recycling are long-term projects ____ determination matters a great deal.
| A．that | B．which | C．whose | D．where |
You needn’t have come in person --- a letter _____enough.
| A．would be | B．is | C．would have been | D．was |