He is my friend as well as yours.
=> Not only......................

He has seldom seen anything stranger
=> Seldom,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

She didn't realize what would happen to her next.
=> Little.........................

The embassy staff little realized that Ted was a secret agent
=> Little................................

They little suspected that the musical was going to be a runaway success.
=> Little.........................

They had seldom participated in such a fascinating ceremony.
=> Seldom..............................

Public borrowing has seldom been so high.
=> Seldom............................

She has rarely travelled more than fifty miles from her village
=> Rarely....................................

One rarely finds good service these day
=> Rarely........................

.I'll never forget you.
=> Never shall..........................