The president has determined to ( ) his visit for a few days longer.
A. expand
B. change
C. add
D. extend
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What ( ) of babies die of this disease every year?
A. percentage
B. statistic
C. percent
D. survey
An advanced country should also be a ( ) one because its people can have more chances to get education.
A. beautiful
B. classical
C. ancient
D. civil
Your must be patient, Tom is slow ( ).
A. to be taught
B. to reaction
C. to react
D. of reading
Don't be nervous. He ( ) wants to know the truth.
A. almost
B. merely
C. mostly
D. fairly