Foreign teachers would like students to___ ask questions, submit theories, or to debate any required reading material[ ]

Dad, must we stop and wait when the light turns yellow—I’m afraid we . It’s necessary to obey the traffic rules.

to the best of his ability.

What a terrible collision accident! – Judging from the scene, personally, it is one or two car drivers, rather than the truck driver, who _____.

The United Nations ________ an international organization that tries to find peaceful solutions to world problems.[ ]