Import for the first three months this year is larger than for the ______ period last year.
A. relating
B. concerning
C. corresponding
D. regarding
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Dolphins are evolved from （）.
A. fish-eating mammals
B. sea animals
C. grass-eating fish
D. land animals
We haven"t been able to find out the ______ of the rumor.
A. source
B. cause
C. resource
D. reason
I ______ to come to your house last night but it rained hard.
A. thought
B. attended
C. intended
D. considered
According to the time table, the train for Beijing ______ at 9:00 p.m. from Monday to Friday.
A. was leaving
B. is leaving
C. leaves
D. has left
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