The time he has devoted in the past years _______ the disabled is now considered ________ of great value.
Between the two roads ________ a TV tower called“Skyscraper Tower”.
.Nothing but one desk and six chairs ________ in the room.
“If anybody ________,please put down ________ name,”said the teacher to the monitor.
The secretary and principal ________ at the meeting now.
Thirty dollars ________ too expensive.