I need a letter to my friend before I go there .
A.write B writing C.to write D.written
_________ the fans are waiting for the popular singer outside the concert hall.
| A．Two thousand of | B．Thousands of |
| C．Two thousands of | D．Two thousand |
They considered ______ a computer ,which was considered ______ a great help in their work.
| A．to buy , to be | B．buying , being |
| C．to buy , being | D．buying , to be |
He fell asleep with a book ___________ open on his knees.
| A．lay | B．laying | C．laid | D．lying |
The shop __________ until 9 o’clock p.m.
| A．stays opened | B．continues opened |
| C．stays open | D．continues open |
I heard that we must have _________ teaching building __________ .
| A．another , to be built | B．the other , to build |
| C．a third , built | D．the other , built |