4. If you 　　　　　math, you should turn to doing some English exercises.

3. The company must ensure that their product　　　　 .

2. My daughter　　　　 me 　　　　　forget to take my medicine.

1. It is important to always try to 　　　　　the way the audience will react.

5. China began a nationwide public service advertising 　　　　　(战役) in 1996, and since then numerous PSAs have appeared around the country.　

4. PSAs use some of the same methods, like attractive and original images

and 　　　　　(创造性的) language, but they are made to serve the public.

3. A commercial advertisement is one which someone has paid for to p　　　　 a product or service.

2. An advertisement provides information and uses p　　　　 language and exciting images to encourage people to buy a product or service or believe in an idea.

1. A 　　　　　(广告) are an important part of our lives.

1．compare相比较．属对照比较，不要与比较级混淆。2．sb. is supposed to据说某人要……。3．过去完成时的谓语动词。1ollk forward to是从句的谓语。4．With pleasure。我很乐意去。5．serlse意识，观念上的“感觉”：6．clothing是不可数名词。7．had been可以与持续长度的时间状语相搭配。8．the size of前面加上倍数等词，表示尺寸大小的几倍。9．couldn’t have当时不可能。10．whatever=anything that 11．there be句型。12．risen，独立主格中的类谓语部分。13．“其他什么人的”。14．“不用谢”。15．permit常用前面有代词的动名词宾语。16．I’d rathe，后面是虚拟语气的句子，动词用过去时。17．“灯灭了”用go out。l8．before引导时间状语从句。19. 具有某种具体意义的某天的“早晨”、“晚上”前，用介词on。20．the后面跟名词的单数，常用来表示这一类别。in danger of是常用短语。