His sister left home in 1998, andsince.
had not been heard of
has not been heard of
had not heard of
has not heard of
He__________ he would be able to leave tomorrow, but it's beginning to took difficult.
—I put him down for a well-educated man. —___________ ? —I mean that he's a well-educated man.
An expert, together with some scientists ______to help in the work.
.My brother is really_____. He often works in his office far into the night .
We spent many hours in a pleasant conversation______ how to fish.