With the car breaking down halfway on the road, we had to abandon it and ______ our training camp in the snow.
Elephants have their own way to tell the shape of an object and _______ it is rough or smooth.
—Why does she always ask you for help? —There is no one else _______, is there?
Do you have any idea _______ is actually going on in the classroom?
Mary wrote an article on _______ the team had failed to win the game.
Doris' success lies in the fact _______ she is co-operative and eager to learn from others.