..----Do you regret not having gone abroad?----Not at all. I_____ as much, but I’m glad to contribute to our motherland.A.didn’t earn B. hadn’t earned D. am not earning D. haven’t earned
-If you have time tonight,I’d like to invite you to a ball. -That’s very nice of you,but are you ____?
-You couldn’t have chosen any gift better for me. -______.
-My mathematics is very poor. -Don’t worry. I’ll help you ______ I can.
-Did your uncle fly to Paris directly? -No,he travelled from Hong Kong _____ London.
Canada,Australia and New Zealand are all ____ countries.