1 . After a number of mini-strokes, the likelihood of a patient ________ by a larger one is very high.

A．struck	B．being struck
C．having struck	D．to be struck

2 . Nowhere in nature is aluminium found free, owing to its always ____ with other elements.

A．combined

B．having combined

C．combines

D．being combined

3 . _______ to nuclear radiation, even for a short while, may do great harm to one’s health.

A．Exposed

B．Being exposed

C．Exposing

D．Having exposed

4 . The discovery of new evidence led to ______________.

A．the thief having been caught	B．the thief to be caught
C．catch the thief	D．the thief being caught

5 . To avoid _________, the team wore different-coloured uniforms.

A．confusing	B．being confusing
C．confused	D．being confused

6 . The boy was lucky enough              .

A．to escape to be punished

B．escaping to be punished

C．to escape being punished

D．to escape punishing

7 . ________ too early to the foreign language study, according to some experts, may lead to some unfavorable outcomes.

A．Exposing

B．Having exposed

C．Being exposed

D．Exposed

8 . —What made Alice so angry?
—________ in the rain for an hour.

A．She was kept waiting	B．Being kept to wait
C．Because of waiting	D．Being kept waiting

9 . As life itself tells us,        in a repetitive life is not the proper way to live it.

A．trapping	B．trapped
C．being trapped	D．having trapped

10 . —What made him disappointed?
—____visit his grandmother at the weekend.

A．Being not allowed to	B．He had not been allowed to
C．Having not been allowed to	D．Not being allowed to