The students listened carefully to the teacher with their eyes _____ on the blackboard.
He is a student at Oxford University, ____for a degree in computer science.
The Smiths went to the country for the weekend as they ______ to the office.
She thought I was praising her child,_____,in fact,I was scolding him for his bad behaviors at school.
—Your mother becomes more and more forgetful.—Yes. She searched for her cellphone for a whole day last Sunday but it ______ in her coatpocket the next day.
— My cat’s really fat.— You ______ have given her so much food.