单项选择题

Once environmental damage ______, it takes many years for the system to recover.
A) is done C) has done
B) will be done D) is to be done

A．Once environmental damage ______, it takes many years for the system to recover.
B．is done
C．will be done
D．has done
E．is to be done

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单项选择题

The shop-lifter ______ without paying a dozen times. A) admitted to take goods C) admitted to be taking goods B) admitted to have taken goods D) admitted to having taken goods

A．The shop-lifter ______ without paying a dozen times.
B．admitted to take goods
C．admitted to have taken goods
D．admitted to be taking goods
E．admitted to having taken goods

单项选择题

The disabled children need many things, but ______, they need love. A) first of all C) after all B) above all D) all in all

A．The disabled children need many things, but ______, they need love.
B．first of all
C．above all
D．after all
E．all in all

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