She brought with her three friends, none of ______ I had ever met before.
| A．them | B．who |
| C．whom | D．these |
I tried phoning her office, but I couldn't ______ .
| A．get along | B．get on |
| C．get to | D．get through |
His sister left home in 1998, and ______ since.
| A．had not been heard of | B．has not been heard of |
| C．had not heard of | D．has not heard of |
What do you mean, there are only ten tickets? There ______ be twelve.
| A．should | B．would |
| C．will | D．shall |
Could I speak to ______ is in charge of International Sales please?
| A．who | B．what |
| C．whoever | D．Whatever |