Andrew was afraid to fill the room with water again, so he __________ the pipe carefully.
#55995
A
put on
B
put out
C
put in
D
put off
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Grandmother always her children when she feels sad.
#59150
A
thinks over
B
thinks about
C
thinks of
D
thinks out
Everyone should make a contribution the environment.
#60222
A
to protect
B
to protecting
C
protects
D
protected
Billy is a nice boy . he knows a lot , but he never ________.
#54021
A
shows off
B
picks up
C
falls off
D
looks up