Our teacher told us _______ in class .

A．listened carefully                       B．to listen carefully

C．listened careful                         D．to listen careful

—_____ swim in the river?

— oh, no. Our teacher told us ____ here. It’s dangerous.

A. Why don’t; not swim     B. Why not;   not to swim

C. Why not; don’t swim           D. Why don’t;  don’t swim

— Our teacher told us that these exercises were __________.

— Really?

Our teacher told us _________ too much noise in class.

Our teacher told us time ______ for no one.

A．wait              B．waiting            C．waited            D．waits