What a day! It’s mining again. We can’t go hiking tomorrow. — Don’ t worry. It won’t __________ long.

Come on, please give me some ideas about the project.—Sorry.With so much work_________my mind, I almos break down.[ ]

ar. I forgot the two _________.

It was not until midnight ____ we got home because of traffic jams.[ ]

udents were studyingin____________classroom when, all of ____________sudden,the lights went out