Scientists have done a lot of r_ on dinosaurs sinse long ago
Scientists have done a lot of r_ on dinosaurs sinse long ago
____ scientists have done a lot of researth on the (H1H1) fl
____ scientists have done a lot of research on A1H1N1 flu,th
.Dinosaurs (existed) on Earth a long time ago
on,a,the,time,lived,long,Dinosaurs,Earth,ago.
英语翻译Dinosaurs lived on the Earth a long,long time ago.Some w
Scientists have learnt a lot _________the kinds of food peop
Long,long ago there w________ a lot of small animals in a fo
scientists have made a lot of important d___ in science in t
Scientists have learned a lot about the kinds of food people
___ research ___ the universe scientists have put a lot of i
英语翻译Scientists have learned a lot about the kinds of food pe