—Who is standing over there?—It must be ________ from an express company.
——Do you mind my opening the window? It’s a bit hot here. —— ________ , as a matter of fact.
All of the students were ______ by the ______ speech _______ by the leader.
. I have no idea _______ he left the party without _______ .
This job needs ______ patience and practice, after all, it will become ______ enjoyable experience after weeks.
They ______ the train to Beijing.Otherwise, they would have returned home.