Lily, my partner, is usually friendly to others, but she___ get into bad temper sometimes.
#86954
A
must
B
should
C
may
D
can
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He ______ the key, so we ______ into the office.
#88113
A
hadn’t left; can’t
B
didn’t leave; couldn’t have got
C
hadn’t left; couldn’t get
D
hasn’t left; couldn’t get
Helen _______ it if she doesn’t want to. 
#87742
A
doesn’t need do
B
need not to do
C
needs not to do
D
need not do