Johan didn’t review(复习)lesson, ________ he couldn’t answer the teacher’s question.[ ]

The first question was difficult, but the rest were pretty easy.

Why didn’t you answer my telephone yesterday?—Sorry. I _______ a bath.

I’m still working on my project.—Oh, you’ll miss the deadline（截止期限）. Time is________.

Daniel found ___ easy to finish writing the report on wildlife.