Researchers found that people who drank excessively were twice as likely as those who drank regularly ______ ischemic(出血性) heart attacks.
The whole class applauded wildly at the end of the speech, ______ greatly encouraged Bob.
—Is the project difficult for the students? —No. Most of the relevant information ______ to them.
Working as a manager, Rebecca found it hard ______ between work and her family.
That restaurant is extremely popular, ______ you may have to wait to get a seat.
Premier Li Keqiang delivered a speech at the conference, _________ university graduates to start their own business.