we must_____people from cutting down trees A stopB prevent C keepD all the above为什么选D,AB为什么不行

we must_____people from cutting down trees A stopB prevent C keepD all the above为什么选D,AB为什么不行 we dsf a fda f We are good f—— We are very frendly. we ate f.fish last ninght为什么 We Chinses put our family name f( ) We f believed that he would succeed首字母填空“f” Every F afternoon,we have a physics cEvery F afternoon,we have a physics class the more careful we are,the mistakes we will makethe more careful we are,the f--- mistakes we will make In English classes,we have a lot of f( ). we are all satisfied with the f result This term we will have (f ) learning English. We can see some f() movies on the Internet we plant some (f )in front of the house We had great f _____swimming in the river we usually eat hamburgers with our f（ ） we have a nice house and happy f----------英语题 We don“t eat too much food that is f when it is f( ),we can't see anything outside