initially; at the beginning at first the work was easy.
bother
to cause someone to feel ill or in mild pain
Loud music really bothers me.
envelope
a container for a letter or card
Send the letter in an envelope tomorrow.
fall
to come down from a higher position suddenly
The books fell from the shelf.
happen
to take place, often unexpectedly or by chance
What happened yesterday?
memory
something from the past that is remembered
His memory was getting worse lately.
misplace
to be unable to find something
I've misplaced my wallet.
recall
to remember something that occurred or was done in the past
I don't recall if I finished the job.
secret
something kept hidden
The plan to win was a secret.
shelf
a flat piece of wood, metal, or glass which is attached to a wall or to a frame and is used for setting objects on
There are a lot of books on that shelf.