. Mathematics ______ the language of science.
| A．is | B．has been | C．are | D．have been |
----You are confident about the job interview, aren’t you?
---- , I’m well prepared and feel I’ve got everything they need.
| A．Sure, I am | B．It’s hard to say | C．I hope so | D．Well, maybe |
---- Putting on a happy face not only helps us make friends but also makes us feel better.
---- _______.
| A．I’d love to | B．I’m with you on that |
| C．It’s up to you | D．It’s my pleasure |
---- We’re organizing a party next Saturday, and I’d like you to come.
---- _______! I have another one that day. Thank you just the same.
| A．Good luck | B．What a pity | C．Never do it again | D．Well done |
—Would you please help me with the box?
—_________
| A．Yes, please | B．No, please don’t | C．With pleasure | D．My pleasure |
—May I open the window to let in some fresh air?
—___________
| A．Come on | B．Take care | C．Go ahead! | D．Hold on! |