—Miss wang once art at Bardon School for ten years and now is a singer.
—No wonder I often hear her sing in the garden.
| A．had taught | B．taught | C．is teaching | D．has been teaching |
. Tom kept quiet about the accident_______ lose his job.
| A．so not as to | B．so as not to | C．so as to not | D．not so as to |
Johnson suggested the problem worth paying attention _____ at the meeting.
| A．to be discussed | B．to been discussed | C．being discussed | D．should be discussed |
. Leo ______ have kept his promise. I wonder why he changed.
| A．must | B．should | C．need | D．would |
______was known to all, he had broken his promise ____he would give us a rise.
| A．As; which | B．As; that | C．It; that | D．It ; which |
Washington, a state in the United States, was named _______one of the greatest American presidents.
| A．in honor of | B．by means of | C．in search of | D．in need of |