根據(jù)提示，從方框中選擇合適的單詞或短語補全句子．

make mistakes；playing the suona；made a video；space travel；say goodbye；snow；playing baseball；buying things；having a picnic；falling down

（1）She's

buying things

buying things

（買東西） for your birthday．
（2）It's a book about

space travel

space travel

（太空旅行）．
（3）It's for

playing baseball

playing baseball

（打棒球）．
（4）The boy is

playing the suona

playing the suona

（吹嗩吶）．
（5）They are

having a picnic

having a picnic

（吃野餐）．
（6）The apples are

falling down

falling down

（跌落） the stairs．
（7）He also

made a video

made a video

（制作了一個視頻） in space．
（8）It's easy to

make mistakes

make mistakes

（犯錯誤）with English．
（9）We're going to

say goodbye

say goodbye

（告別）to our primary school．
（10）It's going to

snow

snow

（下雪） in Harbin．