He walked wearily ______ he fall.(2.0)
A. lest
B. unless
C. except
D. before
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Gorillas are quiet animals, ______ they are able to make about twenty different sounds.(2.0)
A. how
B. in spite of
C. because
D. even though
But that is your affair; we do not ______ with your problems. (2.0)
A. takeover
B. Withstand
C. joint
D. interfere
Lichens exist ______ other plants cannot flourish.(2.0)
A. why
B. what
C. where
D. whether
Strong man ______ he is, the spy has been severely put to test during the past few training months.(2.0)
A. because
B. as
C. if
D. unless