1. We had better _________________(天天锻炼身体).
2. _______________(为了不影响他们),we left quietly.
3. _____________(我答复她)that I would accept her invitation.
4. According to the newly-announced policy,we should ________________(努力搞活国有大中型企业).
5. It has become an utmost urgency that ________________(必须清除政府中的贪污腐化现象).