I have waited for her since _____.
| A．two hours ago | B．two hours before |
| C．two hours’ time | D．two hours |
It used to be thought _____ the Earth was flat.
| A．as | B．when |
| C．since | D．that |
He made _____ known to his friends that he didn’t want to enter politics.
| A．that | B．it |
| C．himself | D．him |
Why shouldn’t I buy a new coat — I haven’t bought _____ for five years.
| A．it | B．that |
| C．one | D．which |
Will you see to _______ that my children are taken good care of while I am away?
| A．it | B．me |
| C．yourself | D．them |
“Excuse me, I want to have my watch fixed, but I can’t find a repair shop.” “I know ________ nearby. Come on, I’ll show you.”
| A．one | B．it |
| C．some | D．that |