Do you remember _____ Mr．Smith at the meeting last Saturday？
| A．to meet | B．meet | C．meeting | D．being met |
—Why are you standing here?
—I’m waiting for Shirley. She will be back _____.
| A．gradually | B．originally | C．shortly | D．abruptly |
. By the year 2020 scientists _____ a lot of research on AIDS.
| A．had done | B．do | C．are doing | D．will have done |
_____ is commonly believed that the play was written by Shakespeare.
| A．It | B．That | C．What | D．As |
He made a promise____he would achieve the success that his parents were looking forward to.
| A．what | B．when | C．that | D．which |
After a knock at the door, the children heard his mother’s voice him．
| A．calling | B．called | C．being called | D．to call |