Would you please tell me the quickest way English well?
| A． to learn | B． of learning | C．how to learn | D．A or B |
I ________ in London for many years，but I've never regretted my final decision to move back to China.
| A．lived | B．was living |
| C．have lived | D．had lived |
In 1492，Columbus ________ on one of the Bahama islands，but he mistook it for an island off India.
| A．lands | B．landed |
| C．has landed | D．had landed |
Excuse me.I ________ I was blocking your way.
| A．didn't realize | B．don't realize |
| C．haven't realized | D．wasn't realizing |
When I got on the bus，I ________ I had left my wallet at home.(2011·山东)
| A．was realizing | B．realized |
| C．have realized | D．would realize |
The three of us ________ around Europe for about a month last summer.(2012·天津)
| A．travelled | B．have travelled |
| C．had travelled | D．travel |