I did not _________ the accident was so serious.
A. tell
B. ask
C. beg
D. expect
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He would often ________ at the black print for a long time.
A. stare
B. watch
C. touch
D. see
The speed of light is not a changing ________ .
A. pretty
B. fluent
C. constant
D. amazed
It was a very, very ________ moment.
A. avoiding
B. proceeding
C. expecting
D. touching
This gives the __________team a sound(坚实的) basis for their work.
A. worked
B. design
C. opened
D. taken