根据句意用适当的介词填空.TheycometoChina______learningChinese.Theseelephantsare_____Thailand.Ihavetoreadbooks_____threehoursonweekends.Thereare_____twohundredanimalsinthezoo.根据汉语提示完成下列句子,

　　根据句意用适当的介词填空.

　　TheycometoChina______learningChinese.

　　Theseelephantsare_____Thailand.

　　Ihavetoreadbooks_____threehoursonweekends.

　　Thereare_____twohundredanimalsinthezoo.

　　根据汉语提示完成下列句子,每空词数不限.

　　Wecan'tbuy_______（象牙制成的东西）.

　　Canyoutellme__________（如何去挽救）theseanimals.

　　Someanimalsare___________（失去他们的家园）.Whatcanwedo?