单项选择题
A．said B．with C．he saying D．at
The teacher came into the room, with his hands ______ b...
单项选择题The teacher came into the room, with his hands ______ behind his back.
Taking more exercise will prevent you ______ weight.A．t...
单项选择题Taking more exercise will prevent you ______ weight.
Now, she is upstairs ______ a long speech for the presi...
单项选择题Now, she is upstairs ______ a long speech for the president.
