计算．
3.51÷3=____
3÷4=____
- We failed in the singing competition.
- . Better times are waiting for you.
写出下列词语的反义词。
温暖—____ 茂密—____
微弱—____ 暴露—____
漆黑—____ 黑魆魆—____
—Are you getting ready__________ the exam?
—Yes, we are.
