They _______ all the details of the plan time and again to make sure that the project went smoothly

Research universities have to keep up with the latest computer and scientific hardware ________ price.[ ]

____________is it from yourschool to the park— 30 minutes’ walk, I think.

t the earth’s atmosphere to protect them,astronauts can be exposed to intense radiation from the sun, ____ them at riskof cancer.

Our city is developing so fast. —-Yes. Many modern buildings _____ inthe city next year.