Great as Newton was, many of his ideas _______ today and are being modified by the work of scientists of our time.
A.are to challenge | B.may be challenged |
C.have been challenged | D.are challenging |
——May I put my luggage on the seat beside you, sir?
——____.
A.Sure, with pleasure | B.Okay, please yourself |
C.Well, never mind | D.Yes, help yourself |
What he ____ ,to be frank, ____ please us present.
A.does; do | B.does; does | C.do; do | D.do; does |
The company has a free long-distance telephone number_____ customers may call with any questions they have about the products .
A.when | B.so that | C.while | D.as |
I know the man ____chance, but I have never spoken to him.
A.with | B.on | C.for | D.by |
---Must I go to work with you?
--- No, you_____. Linda ______ go with me.
A.mustn’t ; can | B.can’t ; has to | C.daren’t ; should | D.needn’t ; may |