What does Miss Black do at weekends– She with some students often ___________ in the playground.

She will have a holiday as soon as she ______ the work next week,

His father ________ in Beijing now. Last year he ________ in Dalian.

(2013·高考湖南卷)If nothing________，the oceans will turn into fish deserts

Ever since their quarrel, there has been an unpleasant in the office.