There are a great number of natural resources in the desert, which remain to be ________.
#93907
A
explored
B
exploited
C
exploded
D
exposed
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This is the best way I could think of ______________ into the dangerous area.
#96249
A
topped people getting
B
o protect people from getting
C
o prevent people getting
D
eeping people from getting
---What do you thin of the book?---Oh, excellent. It’s worth _______ a second time.
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A
to read
B
to be read
C
reading
D
being read
My friend Jack has just sent me an e-mail, _______ me about his travels around the world.
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A
tells
B
told
C
telling
D
to tell
__________of danger in the street at night, she had to go home, with a friend_________ her.
#94580
A
Warned, followed
B
Warning, following
C
Having warned, following
D
Having been warned, following