___on-going division between English –speaking Canadians and French-speaking Canadians is _______major concern of the country.
| A．The ,/ | B．The ,a | C．An ,the | D．An,/ |
I witnessed the gate of the bank _______ open and many men entering it, but I couldn’t make them out in the darkness.
| A．force | B．be forced | C．forcing | D．being forced |
— I didn’t care about what other people thought about me.
— Well, you ________.
| A．should | B．ought to have | C．would have | D．could |
As a result of __ is now known in physics and chemistry, scientists have been able to make important discoveries in biology and medicine.
| A．it | B．what | C．which | D．that |
These teenagers don’t know much of the world yet; that’s why they are so easily_____.
| A．taken in | B．taken up | C．taken on | D．taken off |
It is the interaction between people, rather than the events __ occur in their lives, __ is the main focus of social psychology.
| A．that, that | B．that, which | C．which, which | D．that, what |