The mother with her son ________ at home ________ that snowy night.

Betty and Lingling are _____ the classroom. [ ]

How was the concert last night?—It was so good. Though it nearly four hours, few people left early.

The number of students in our school ___ 9,000 and a number of them ___ from the city.

How time flies! It has been ten years I moved to Chongqing.