Seeing their son playing computer games all day, the parents don’t know ______ it.
All happy families _____ one another, but each unhappy family is unhappy in its own way.
I don’t think the old man saw me—he _____ a newspaper.
Greatly encouraged by what the teacher said, the boy returned to his seat, ____ to study harder.
As US President Barack Obama _____London, fresh figures showed US house prices were falling at their fastest pace on record.
Sorry, my parents can’t come to the meeting. They _____ to Beidaihe on holiday.