The coasted areas have mild winters, but ____ the central plains become extremely cold.
A．by contrast B．with contrast C．contrast D．contrasting
In a way it was a(n)______ to know exactly what we were up against.
A．effect B．means C．relief D．suggestion
The programme was so exciting that the children kept their eyes____ on the screen.
A．to fix B．fixed C．to be fixed D．fixing
-- What’s the matter with you?
---____ the window, my finger was cut unexpectedly.
A．Cleaning B．To clean C．While cleaning D．While I was cleaning
--You were brave enough to raise objections at the meeting.
---Well, now I regret____ that.
A．to do B．to be doing C．to have done D．having done
--You didn’t wait for Mike last night, did you?
---No, and we____ for him. He didn’t return home at all.
A．didn’t need to wait B．needn’t waiting
C．needn’t have waited D．didn’t need wait
