, I lost(弄丢)your pen.A.OK B.Sorry C.Thanks
Have you ever seen ______ China pavilion(展馆)? ______ traditional one indeed.
---Could you _______ me your MP4?---Sorry, it isn’t here at the moment. Tom ________ it for about two weeks.
_____ pleasant life we are having in the new century!
There __________ great changes in our hometown over the twenty years.
The water in this river is harmful because It’s a ______ river.