---Why do you look so upset?
---There are so many troublesome problems _____.
| A．remaining to be settled | B．remained settled |
| C．remaining to settle | D．remained to be settled |
______ has already been pointed out, grammar is not a set of dead rules.
| A．As | B．It | C．That | D．Which |
There is a mountain ________ the top is always covered with snow.
| A．of that | B．of which | C．whose | D．that |
---Why did the police _____ the crowd?
---Because the presidents car ____ in the street.
| A．break down, broke down | B．break up, broke up |
| C．break down, broke up | D．break up, broke down |
John, as well as the other children who _____ no parents, ________ good care of in the school.
| A．have; is being taken | B．have; has taken |
| C．has; have been taken | D．has; are being taken |
The poor children are looking forward to _____ a Christmas present that day.
| A．give | B．be given | C．giving | D．being given |