题目内容

The ________(practical) and convenience of online learning has helped it become a popular choice among busy adults.

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Most programs offer rolling ________(admit) and courses begin frequently so students can get started quickly.

During the outbreak of COVID-19, there is considerable ________(certainty)about the company's future.

There is little evidence that this encouraged flexible, and ________ (interact) teaching in the classroom.

Some patients with mental illness may become very________ (isolate) and depressed.