John had a very serious __________ about working hours with the new trainee.
举一反三
- He felt very tired because he ______ 18 hours without a rest. A: had worked B: worked C: was working D: had been working
- What have studies shown about students who had part-time jobs? A: Many of them had lower stress. B: Many of them had decreased efficiency. C: Many students had worse grades if working less than 15 hours a week. D: Many students had better grades if working less than 15 hours a week.
- John had been working hard and ________.
- He didn't look well, for he _______ for sixteen hours A: had worked B: was working C: had been working D: works
- We had been working for almost 16 hours, and we ________finished the task.