We should put away all medicines out of reach of children and make sure they are not left ________. 
#98198
A
lie round
B
laying around
C
lain round
D
lying around
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He was busy last night, otherwise he ______ to the meeting.
#98822
A
would come
B
would have come
C
came
D
had come
 ____ which university to attend, the girl asked her teacher for advice.
#90665
A
Not knowing
B
Knowing not
C
Not known
D
Known not