1.There was a CD and a photo on the table.
(改为复数)
There were some CDs and some photos on the table.
2.(They) havea lot of ideas.(划线部分提问) (我用括号代替线)
Who has a lot of ideas?---注意,需要用has,因为单数.
3.Many birds flew above the city last night.
(改为否定句)
Many birds didn't fly above the city last night.
4.We knew a little about dinosaurs.(一般疑问句)
---Did you know a little about dinosaurs