He _______ a sense of humor. This is why I don’t like being friends with him.
#102941
A
is lack of
B
is lacking in
C
lacks of
D
is lacking of
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Visitors ______ not to touch the exhibits. 
#105000
A
will request
B
request
C
are requesting
D
are requested
She ______ tomorrow and you had better see her off(送行).
#100022
A
is leaving
B
left
C
leaves
D
has left
---Hi, Dave. This is Helen speaking!---Hi, what a coincidence! I _____ about you.
#100383
A
was just thinking
B
just thought
C
have just thought
D
would just think