When ______ about the possibility that Justin was taken by aliens, Detective Sam Peterson said that there was no hard evidence about this.
Pat decided to ______ eating fast food to lose some weight and keep fit.
Sorry, we don’t allow ______ in the lecture room.
—Would you prefer to attend a private tutor? —I’d rather _____ for a class than _____ a tutor.
The father as well as his daughters _____ skating on the freezing river every Sunday afternoon.
Martin was_____ to win the 100-meter race, but he fell to the ground and missed the chance.