—Why are you looking so worried? —I sent an email to my son in America last week, but no reply ________.
.I saw him ________ at desk, reading.
Sometimes it was a bit boring to work there because there wasn’t always ______ much to do.
Happy birthday , Alice ! So you havetwenty-one already !
It is ___world of wonders, world where anything can happen.
What surprised me was not what he said buthe said it .