2011½ì¸ß¿¼Ó¢ÓïµÚÒ»ÂÖ¸´Ï°ÌáÉý¼ì²âÊÔÌâ12
¢ñ.µ¥´Êƴд
1. I tried to get through, but there were too many people b my way.
2. The old man recovered r and was soon able to go outside again.
3. The air in the room is not pure. Do you have any way to p it?
4. Some language experts make an attempt to (ʹ±ê×¼»¯) spelling.