[单选题] The research is so designed that once ________ nothing can be done to change it.

1、[单选题]Reading is an experience quite different from watching TV; there are pictures ________ in your mind instead of before your eyes.

• A、to form
• B、form
• C、forming
• D、having formed

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2、[单选题]The man insisted ________ a taxi for me even though I told him I lived nearby.

• A、find
• B、to find
• C、on finding
• D、in finding

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3、[单选题]________ the programme, they have to stay there for another two weeks.

• A、Not pleting
• B、Not pleted
• C、Not having pleted
• D、Having not pleted

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4、[单选题]________ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.

• A、To wait
• B、Have waited
• C、Having waited
• D、To have waited

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5、[单选题]“We can’t go out in this weather,” said Bob, ________ out of the window.

• A、looking
• B、to look
• C、looked
• D、having looked

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