60. She is doing her homework .I'll do_______.
Food safety _____ to customers, which should be the minimum requirement for the food industry.
His being late for the performance __________ a complete failure
It’s already 10 o’clock. I wonder how it ______ that she was two hours late on such a short trip.
The program has made great progress _____ little support from the government.
Once you _____ working with the professor, you will find he is not as tough as expected.