The bridge _________2,000 meters long was designed by Frank.

—Come on, please give me some ideas about the project.—Sorry. With so much work __________ my mind, I almost break down.

What the public is          about is whether medical workers and scientists will be able to find a cure for the new disease in a short time.

Tom always prefers _________on foot rather than _______ a bike.

—What do you think made Tina so delighted？ —__________ the driving test at her first attempt.