A.Look | B.Look out | C.Look at |
A.Sit down, please. | B.Don’t talk. | C.Don’t sleep. |
A.Don’t shout (喊叫). | B.Stand up! | C.Sit down! |
A.at | B.on | C./ |
A.I’m sorry. | B.Thank you. | C.OK. |
A.open the window | B.close the window | C.don’t close the window |
A.Don’t close your books. | B.Don’t open your books. | C.Open your books. |
A.the | B.any | C.some |