用所给动词的适当形式填空。

1. I saw the boy ________ (play) football when I looked out of the window.

2. It’s important ________ (not give) goldfish too much food.

3. Children shouldn't spend too much time ________ (watch) TV.

4. Are they busy ________ (count) the birds?

5. My parent _________ (clean) the house at eight yesterday evening.

6. Look! The children _________ (plant) flowers.

7. If anybody _________ (break) the model plane, he ________ (have) to pay for it.

8. Suzy, _________ (not be) late for school.

9. Tom _________ (begin) to learn Chinese last year.

继青岛“天价大虾”之后，各地又出现“天价扇贝”，“天价面条”，宰客事件频频出现，折射出旅游市场混乱，收费不合理，餐饮、住宿、交通等漫天要价的行为普遍。对产生的原因和解决措施，看法正确的是：（）。

①是市场自发性的表现，交给市场价值规律自发调节解决

②政府市场监管不到位，应该加强监管，以行政手段为主，延长停业整顿期。

③市场诚信缺失的表现，应该加强信用制度建设，建立失信黑名单机制，加强监管力度

④加强法律手段，提高“宰客”业主的违法成本，多部门联合，严格执法。

A、②④

B、①③

C、①②

D、③④