An A4 sized panel ( 太阳能板 ) put onto the back of a jacket costs __________ US$15. It could __________ a cellphone during a summer walk.
D
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The boy bought a new dictionary__________ he turned for help.
WhenBobwokeuphefoundhimselfinhospital,buthedidnt__________.
We are living a_____
Hiswholeschooleducation________only2yearsbecauseofhisillness.
It's seven thirty. I_________ go to school.
