两个长5厘米、宽2厘米的长方形重叠成下方的图形.它的周长是( )
A:9厘米
B:20厘米
C:24厘米
D:18厘米
I think Lily should wear __________ more because she worries a lot and often gets stressed.
I got on the bus and found a seat near the back, and then I noticed a man ____ (sit) at the front.