1 . The children cannot leave the room without ______ (许可). （根据汉语提示单词拼写）

2 . 想到被孤零零地留下，她就不寒而栗。
The thought of __________ _________ ___________ filled her with horror.

3 . _________ by green mountains and located at the foot of Lushan Mountain makes it a famous tourist attraction.

A．Surrounded

B．Being surrounded

C．Surrounding

D．Having surrounded

4 . What frustrated Joanna most was ___________ to go abroad alone.

A．not her being allowed	B．her not being allowed
C．her being not allowed	D．her being allowed not

5 . She doesn’t like Miss Janie, so she always avoids __________ with her.

A．to be left alone

B．being left behind

C．being leaving behind

D．being left alone

6 . The accident happened at a time            medical care was quite backward and therefore led to thirty people            at last.

A．when; killing	B．that; being killed
C．when ; being killed	D．that; killing

7 . The thief entered the room without ______________.

A．noticing	B．being noticed
C．having noticed	D．having been noticed

8 . The government has to close those small factories to prevent the water of the river ______.

A．polluting

B．from polluting

C．being polluted

D．polluted

9 . Social attention should be paid _______ our earth from _______.

A．to prevent; being polluted	B．to prevent; polluting
C．to preventing; being   polluted	D．to preventing; polluted

10 . After he became conscious, he remembered ______ and_____ on the head with a rod.

A．to attack; hit	B．to be attacked; to be hit
C．attacking; hitting	D．having been attacked; hit