A boy with two dogs_____ when the earthquake rocked the city.
| A．were sleeping | B．is asleep | C．was sleeping | D．are asleep |
I have known him________ I was young.
| A．before | B．when | C．after | D．since |
I won’t go to the concert because I________ my ticket.
| A．lost | B．don’t lose | C．have lost | D．will lost |
---The world is becoming smaller and smaller because of the Internet.
----____________.
| A．No problem | B．Exactly | C．All right. | D．That is all right. |
_____, do you know where the nearest post office is?
| A．By the way | B．On the way | C．In the way | D．To the way |
When I passed the river, I saw some children ______ on the sand.
| A．play | B．were playing | C．playing | D．played |