Hardly _ when they realized that it was too late to catch the last train．
| A．the clock had struck twelve |
| B．the clock had been struck twelve |
| C．had the clock been struck twelve |
| D．had the clock struck twelve |
---- ________ you spoil everything, Kevin?
---- Please don’t get me wrong. I just want to help and I am a good man and I ….
| A．Must | B．May | C．Can | D．Will |
After 15 years in the USA, he finally decided to ________ American citizenship.
| A．concentrate on | B．apply for |
| C．put off | D．lead to |
Nowadays, China has become the largest consumer of mobile phones. _______, every person has one mobile phone.
| A．Above all | B．In other words | C．On the whole | D．On average |
Better _______ the local customs or you will have a hard time.
| A．form | B．develop | C．respect | D．spread |
I wondered what great difficulty he had ________ the plan.
| A．to carry out | B．carrying out | C．carried out | D．with carrying out |