用所给单词的适当形式填空。

1.I ___ __ (be) busy yesterday.

2. It's time___   _ (go) to bed.

3. He __   __ (have) some bread for breakfast this morning.

4. He did some __ ___ (read) last night.

5. My mother ___ __ (clean) the house the day before yesterday.

用人单位与劳动者订立劳动合同时，应当将工作过程中可能产生的（ ）如实告知劳动者，并在劳动合同中写明，不得隐瞒或者欺骗。

A．职业病危害及其后果

B．职业病防护措施和待遇

C．职业病危害及其后果、职业病防护措施和待遇等