After taking the training course, they have performed their duties much ( well)__1__than before.
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Only by ( create)__1__a clean environment can we truly encourage more tourists to come.
This research paper focuses on (health)__1__lifestyles for elderly people.
Our new manager (expect)__1__to deliver a speech at tomorrow's meeting.
This APP allows you (see)__1__the departures and arrivals of all the flights.