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【单选题】
Some people haven't realized something as common as _____ to the sun for a long time will do
harm to their skin and even cause skin cancer.
[ ]
A.
exposing
B.
being exposed
C.
having exposed
D.
exposed
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参考解析：
刷刷题刷刷变学霸
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【单选题】—Has your brother returned from the USA yet?— Yes, but he ____ here for only two days before his company sent him to Australia. [ ]
A.
stayed
B.
has stayed
C.
will stay
D.
was staying
【单选题】After being criticized by her mother,she spoke out the words______in her heart for many years,tears________her eyes. [ ]
A.
having hidden; filling
B.
hidden; filled
C.
hiding; having filled
D.
hidden; filling
【单选题】I'm tired out．I all afternoon and I don't seem to have finished anything.I'm tired out. Iall afternoon and I don't seem to have finished anything.
A.
shopped
B.
have shopped
C.
had shopped
D.
have been shopping
【单选题】— Can we let these new graduates take on the task? — I'm afraid not. While they are energetic and ambitious, ____ of them seems to be suitable for this demanding job.[ ]
A.
no one
B.
anyone
C.
none
D.
few
【单选题】We can get a lot of useful information on the Internet; ______, the Internet also provides us with a new way of communication.
A.
otherwise
B.
therefore
C.
however
D.
besides
【单选题】Don’t be afraid of asking for help _______ it is needed.
A.
unless
B.
though
C.
although
D.
when
【单选题】It is widely ______that smoking can cause cancer.
A.
believed
B.
think
C.
say
D.
hoped
【单选题】The weather in my hometown in summer is usually very hot but it ________ be cold sometimes.[ ]
A.
should
B.
can
C.
must
D.
may