1.She said that she ________ in that country since 1953
A.has worked
B.had worked
C.works
D.worked
2.The young scientist decided to work ________ in the ________ forest
A.lonely; alone
B.alone; lonely
C.alone; alone
D.lonely; lonely
3.Make up your mind, ________ you will miss the opportunity
A.unless
B.or
C.and
D.so
4.Though he had failed many times, he still said he wouldn’t ________
A.give away
B.give off
C.give in
D.give up
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