Scientists photographed for the first time ever _____ wild gorillas used a stick to test the depth of a pool before getting into it, according to a recent study.
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.