A full understanding of mathematics is sufficient to explain a wide variety of natural .
A. performances
B. performance
C. phenomenon
D. phenomena
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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
The committee a decision from the head office before it takes any action.
A. is awaiting
B. is awaiting for
C. awaited
D. awaited for
The little girl did seem to be frightened of being left by herself in the house.
A. not .... at least
B. not ... in all
C. not..... in the least
D. not ....at most