My cell-phone has disappeared. Who have taken it away?
--- Was it by cutting down unnecessary expenditure ______ Mr. Simon saved the firm? --- No, it was by improving work efficiency.
The house, ______ door often stays open until late at night, works as a home for the guards, some of ______ are from the countryside.
---What have you learned from your experience in the USA? ---Well, meeting people from another culture ______ be very difficult.
. ---Have you seen ____ iphone? I left it on the desk this morning. ---Is it ____ white one? I think I saw it somewhere.
It is a ________,but is a chance as well.