, it was the wrong time to open a new data processing center in this city.
A. In due course
B. In retrospect
C. On occasion
D. On the other hand
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My reaction to the news was relief, but as I thought more about it I began to feel angry.
A. continual
B. principal
C. initial
D. critical
A full understanding of mathematics is sufficient to explain a wide variety of natural .
A. performances
B. performance
C. phenomenon
D. phenomena
Make sure the label is firmly to the parcel before you mail it.
A. attaching
B. attached
C. inserting
D. inserted
My boyfriend bought me dinner to being late the day before.
A. pick up
B. work on
C. make up for
D. throw light on