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
推荐题目
Robert is said _______ abroad, but I don’t know what country he studied in. 
#98633
A
to have studied
B
to study
C
to be studying
D
to have been studying
His father disappeared, ________ two children and never _______ from again.
#97926
A
left; being heard
B
leaving; heard
C
left; be heard
D
leaving; to be heard