therearelivingcreaturesintheou

___ there are living creatures in the outer space as those on Earth hasn’t been proved until now.

A．How

B．When

C．Where

D．Whether

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In order not to be disturbed ,I spent three days in my study.

A．locking

B．locked

C．to lock

D．lock

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A．attend

B．attended

C．attending

D．to be attending

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He sat back on the chair, took a book and began to read, ___.

A．being looked at ease	B．looked rather at ease
C．to look rather at ease	D．looking rather at ease

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A．and not to speak	B．but could not speak
C．instead of speaking	D．or rather speak

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______ as the “First Lady of Speech”, Dr Lillian Glass is recognized as one of the world’s leading experts on communication skills.

A．Knowing

B．Having known

C．Known

D．To be known

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