It was several minutes ________ we realized what was happening—our dog was trapped in a newly－dug tunnel.
| A．since | B．before | C．until | D．While |
-----This returned Chinese scholar has become one of the top experts in this field.
-----Yes, I know him very well. He _____ in Africa with wild animals for eight years.
| A．is working | B．had worked | C．worked | D．has been working |
All________made______possible for China to succeed in carrying on its reforms and open-door policy.
| A．what happened; it | B．what happened; that | C．that happened; it | D．that happened; that |
The pencil________which you wrote just now______me.
| A．in; belonging to | B．\; is belonging to | C．with; belongs to | D．with; is belonged to |
The government tried its best to _____ the people’s needs, but the people were still not ______. In fact, what the government did was not______.
| A．satisfy; satisfied; satisfying | B．satisfy; satisfying; satisfied |
| C．satisfied; satisfied; satisfying | D．satisfying; satisfied; satisfied |
Coming into the room, I found them ______ at the table, _____ chess.
| A．seated; playing | B．seating; playing | C．seat; play | D．seated; played |