单项选择题

The experiment ______ the discovery of a cure for cancer.

A．happened to
B．led up
C．resulted in
D．set up

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单项选择题

Tony. Is there anything I can do for you Tom: （）, but I can manage it myself.

A. That’s very kind of you.
B. What can I do for you
C. Please take it easy.
D. Yes, but why
E. Could I have your name.
F. Please give my best regards to your family.
G. But he panned to.
H. How about going to the movie

单项选择题

Student A. Good morning. Would-you please do me a favor Student B: Certainly. （）