【题目】 Robert is said ________ abroad, but I don’t know what country he studied in.

1、[单选题]________ such heavy pollution already, it may now be too late to clean up the river.

• A、Having suffered
• B、Suffering
• C、To suffer
• D、Suffered

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2、[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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3、[单选题]Helen had to shout ________ above the sound of the music.

• A、making herself hear
• B、to make herself hear
• C、making herself heard
• D、to make herself heard

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4、[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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5、[单选题]Having a trip abroad is certainly good for the old couple, but it remains ________ whether they will enjoy it.

• A、to see
• B、to be seen
• C、seeing
• D、seen

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