30. My parents have promised to come to see me before I _____ for Africa.
If he takes up this job, he will have no choice but ________ a much greater challenge.
New technologies have made ________ easier to enjoy life than ever before.
The California Earthquake took place at 5:15 a.m., and _______ for only a minute.
By the time the tornado ended, more than 700 people ________.
I didn’t agree ________ what he said. In other words, I didn’t agree ________ his plan.