We_______on this project for four hours. Let’s have a rest.
| A．are working | B．have been working | C．worked | D．had worked |
_________ to a lot of new ideas when studying in college, Mary always does something that others can’t understand to realize her dream.
| A．Exposing | B．Exposed | C．Being exposed | D．Having exposed |
There are many cars coming up and down. If you insist on standing there, you will risk _________ down on the ground.
| A．knocking | B．to knock | C．being knocked | D．knocked |
All of us thought _________ no use talking about some unpractical matters frequently.
| A．that | B．it | C．this | D．which |
-- You shouldn’t have made _________ appointment with her that you couldn’t keep.
-- What _________ pity! It was not my fault. It was she who was to blame.
| A．an; the | B．the; a | C．an; a | D．the; the |
Was it _________ she said or something that she did ___________ you were angry at so much?
| A．what; that | B．that; which | C．that ; what | D．what; which |