同一种商品在市场上出售,它的价格忽高忽低,造成这一现象的直接原因是( )
Visitors were _____at the _____pictures that the guide showed.
— I think my child’s behavior is _______ . — No, he just has a lot of energy.
He is a foreigner and he is not accustomed _____like that while he i8 tn China.
The school is _____ a Chinese teacher for the new term who masters the English language perfectly.
265 is ____________.