（14分）背景材料：长期以来，国有企业承担着职工养老、医疗、待业的多数费用，这一方面加重了企业的负担，削弱了企业在生产和经营上应有的职能；另一方面使那些建厂早、退休职工多的老企业背上了沉重的包袱，压抑了企业的生产经营积极性。为了更好地发挥企业应有的活力，需要新型社会保障制度的支撑。

评析：我国的社会保障水平越高，企业活力就越强。

用动词的适当形式填空

1. I         (go) to the beach         (swim) with my friends yesterday.

2. Tom____(enjoy)____(work)with people.

3. The students of Class One     (wait)for their teacher now.

4. The little girl      (have)a lot of fun____ (learn) Chinese last year.

5. Kate is a reporter. She often____ (sleep) in the day and____(work) at night.