They promise to try all means to _____ that the sample will arrive in time at the trade fair.
A. ensure
B. insure
C. secure
D. assure
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We had _____ that interest rates would have fallen further by now.
A. appreciated
B. participated
C. appropriate
D. anticipated
The modern machine proved ______ in heart surgery.
A. high valuable
B. highly valuable
C. valuable high
D. valuable highly
Mr. Johnson and his ______ daughter do not always understand each other.
A. older
B. the oldest
C. eldest
D. the eldest
They ______ thought that the truth would be finally discovered.
A. little
B. not
C. small
D. bit
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