1. There are so many kinds of tape-recorders on sale that __________________________ (我都拿不定主意买哪一种).
2. The light in the office is still on._________________________ (他忘记关了).
3. His composition was so confusing that _____________________________ (我简直看不懂).
4. As the saying goes, reading without reflecting is like __________________________ (吃饭不消化).
5. _______________________ (他的回答是这样) that he didn’t say yes and he didn’t say no.
答案：
1. There are so many kinds of tape-recorders on sale that I can’t make up my mind which to buy. (我都拿不定主意买哪一种).
(本题考查不定式作宾语的句型：“动词+疑问句+to”)
2. The light in the office is still on. He forget to turn it off (他忘记关了).
(本题考查动词forget的用法，forget to do意思是忘记考试365要去做某事，forget doing意思是忘记做过某事。显然题干表示没有做关灯的动作，应采用forget to do)
3. His composition was so confusing that I could hardly make any sense of it (我简直看不懂)
(本题考查词语搭配，make sense of “理解，弄懂…的意思”)
4. As the saying goes, reading without reflecting is like eating without digesting (吃饭不消化)
(本题考查前后一致和逻辑照应，前半句的“阅读与思考”对应后半句的“吃饭与消化”)
5. His response was such (他的回答是这样) that he didn’t say yes and he didn’t say no.
(本题考查强调句型，that从句表示His response的具体内容)