It is reported that very little use of these waste materials_______ in the past decades.
The language used in advertisements differs from ____ used in ordinary readings.
—Keep ____ in mind that you have to be home by 10 o’clock.—Ok, I will.
—Did you listen to Mr.Jackson’s lecture ?— Yes,I have never heard a _____ one.
He is a worthy leader, who never ______ his power which is given by people
—Who takes _____ charge of the work?—It is in ____ charge of Lily.