在平面直角坐标系中，点（-1，-3）位于（　　）

A．第一象限

B．第二象限

C．第三象限

D．第四象限

小题1:Look ! Stephen ______________(lie) on the bunk bed.

小题2:Lily, ________________(look) out of the window. There is a lovely dog.

小题3:Everyone in our family _________________(like) to watch Lucky 52.

小题4:It’s important__________________(not play) with fire.

小题5:They live a comfortable life and have nothing_______________(worry) about.