如图所示,电源电压保持不变,当开关S1闭合,S2断开时,电压表示数3V,当S1断开,S2闭合时,电压表示数4.5V,则灯泡L1和L2两端的电压分别是 ____V和 ____V.
“You can't have them both. You can choose ________ the kite ________ the toy car,” said Mother.
— Yes. But I ____ (write) an important report then.