Bob used to __in the countryside . But now he is used to ____in the big city .
﹣Let’s play soccer. ﹣Good idea! Do you have __________ soccer ball? A.a B.an C.不填
The boy is so quiet. How did you make him _________?
good the weather is! Shall we go for a walk?
---How many apples are there in your bag? ---___________
My father has worked there ___________.