9.我用红糖代替白糖来做蛋糕。
A. I substituted brown sugar for white sugar to make the cake.
B. I used brown sugar to instead of white to make the cake.
10.The starving man wolfed down the food.
A. 狼
B. 狼吞虎咽
11.Wherever I go, my little brother dogs my footsteps.
A. 尾随
B. 小狗
12.Yesterday when I visited him at 10 o’clock, he was already between the sheets.
A. 昨天我十点去他家的时候,他已经睡在被窝里了。
B. 昨天我十点去他家的时候,他已经在床单之间了。