对括号部分提问：1.We bought (slice of pizza) yesterday.2.They ate some ice cream (this morning).
问题描述：
对括号部分提问：1.We bought (slice of pizza) yesterday.2.They ate some ice cream (this morning).
还有：
3.(We) bought some book this afternoon.
4.They bought (some newspapers) this afternoon.
答
1 What did you buy yesterday?
2 When did they eat the ice cream?
3 Who did buy any books this afternoon?
4 What did they buy this afternoon?