Woodisoften_________paper.
Youshouldtrytowrite__________evenwhenyou’rebusy.Asyouknow,practicemakesperfect.
Theboyboughtanewdictionary__________heturnedforhelp.
— How are you today? —Oh, I __________ as ill as I do now for a long time.
MrWhite________at8:30forthemeeting,buthedidn’tshowup.
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.