5.The first aeroplane flew only at 48km per hour.（对划线部分only at 48km per hour提问)_________
问题描述：
5.The first aeroplane flew only at 48km per hour.（对划线部分only at 48km per hour提问)_________
2.There is ____(many/much) traffic on Green Island.3.Please keep the windows ___(open),let the fresh air in.4.Last night,Tommy ____(fall) off his bicycle and ___(hurt) his legs.
答
5.How fast did the first aeroplane fly?
2.much
3.open
4.fell hurt