.Lessons _______ easily were soon forgotten.
| A．to learn | B．learn | C．learned | D．learning |
______ no bus, we had to walk home.
| A．There was | B．There being |
| C．Because there being | D．There were |
During the rush hour they werein the heavy traffic．
| A．held on | B．held up |
| C．held down | D．held out |
--- The film we saw last week is very romantic.
--- ___ I did not think it romantic at all.
| A．With all due respect | B．I beg to differ |
| C．As predicted | D．I can’t agree with you more |
China made a commitment to the world in the Copenhagen Summit that by 2020, the carbon-intensity of its economy ______ fall 40% to 45%.
| A．shall | B．may | C．must | D．should |
--- I am really struck by your spoken English. You speak so fluently. Have you been abroad?
---Yes. I ______ in London for two years.
| A．have stayed | B．stayed |
| C．had stayed | D．have been staying |