用动词的适当形式填空
【小题1】____________(study) Zhalong helps us learn about protecting wildlife.
【小题2】Some of the students___________（remove）the snow when we arrived there.
【小题3】One of my classmates __________________ ( be) to the Great Wall twice.
【小题4】Father’s Day is coming, but I__________ (buy) a present for my father yet.
【小题5】Tom ____________ (live) in Nanjing for ten months in 2005.
【小题6】There__________ (be) many great changes in many areas in China since 2000.
【小题7】The teacher has told us many times that light _____________ (travel) faster than sound.
【小题8】We did everything we can____________ (protect) animals in danger.
