Look!The students (answer)the questions carefully.
This volleyball must belong to Carla.(改为否定句)
This volleyball Carla's.
At first, he didn't know what he could do in the new group.(改为简单句)
At first, he didn't know do in the new group.
How's the weather today?(改为同义句)
the weather today?
Could you please be there at 5:00?(改为祈使句)
at 5: 00, please!
The sweater is 20 dollars.(对画线部分提问)
is the sweater?