When this new kind of virus broke out at first in Mexico, no one had the least idea that it would _______ so rapidly throughout the world.

________ the editor at the airport?— No, he ________ away before my arrival[ ]

.—____ did you leave the classroom —____ I saw my daughter sit down and read her book.

“75% of the students watch TV every day” means _______ students like watching TV.

was no hard evidence, most people thought he had broken the window of the classroom.