Jim was walking along the river_______ he heard someone_______ "Help! Help!
#56199
A
when; shout
B
while; shouting
C
as; to shout
D
when; shouting
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——Who is knocking at the door?——It ______ Mr. Black, because he_______Washington.
#54792
A
can't be;has gone to
B
may be;has been to
C
must’t be;has gone to
D
may be;went
It’s impolite_____ others.
#61954
A
laughs at
B
to laugh at
C
laugh at
D
laughing at