1.________ (compare) to other animals,hibernating bears look different.________ (compare) hibernating bears to other animals,we may easily find the difference.2.With my poor English,I’m afraid I can’t make myself _____ (understand) the long story

1.________ (compare) to other animals,hibernating bears look different.
________ (compare) hibernating bears to other animals,we may easily find the difference.
2.With my poor English,I’m afraid I can’t make myself _____ (understand) the long story.
With my poor English,I’m afraid I can’t make myself _____ (understand) by the audience.
3.Some experts argue that the writing section _____ (add) to the entrance exam will be effective in testing the students’ ability.
Some experts remark that the writing section in the latest entrance exam is difficult,_____ (add) to students’ and parents’ anxiety about their exam results.
4._____ (expose) to advertising too often tends to make children materialistic.
Children ______ (expose) to advertising too often will become materialistic.
_______ (expose) oneself to advertising too often is an important cause of becoming materialistic.
5._____ (see) the guys bully the young boy,one of the passers-by immediately contacted the police.
When _____ (see) by the tough guys,the young boy would be bullied by them.
______ (see) the tough guys who often bullied the young boy,I went home with him yesterday.

compared  comparing
understand  understood
added adding
exposing  exposed   exposing
seeing seen  Having seen
这是我做的答案,不知道正不正确,

1. Compared    comparing

1. ____Compared____ (compare) to other animals, hibernating bears look different.
____Comparing____ (compare) hibernating bears to other animals, we may easily find the difference.
2. With my ...

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1. ____Compared____ (compare) to other animals, hibernating bears look different.
____Comparing____ (compare) hibernating bears to other animals, we may easily find the difference.
2. With my poor English, I’m afraid I can’t make myself __understand___ (understand) the long story.
With my poor English, I’m afraid I can’t make myself __understood___ (understand) by the audience.
3. Some experts argue that the writing section ___added__ (add) to the entrance exam will be effective in testing the students’ ability.
Some experts remark that the writing section in the latest entrance exam is difficult, __adding___ (add) to students’ and parents’ anxiety about their exam results.
4. __Being exposed___ (expose) to advertising too often tends to make children materialistic.
Children ___exposed___ (expose) to advertising too often will become materialistic.
__Exposing_____ (expose) oneself to advertising too often is an important cause of becoming materialistic.
5. __Seeing___ (see) the guys bully the young boy, one of the passers-by immediately contacted the police.
When ___seen__ (see) by the tough guys, the young boy would be bullied by them.
__Having seen____ (see) the tough guys who often bullied the young boy, I went home with him yesterday.

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