We have made ________ a rule________ in the office.
| A．this; not to smoke | B．it; smoking |
| C．it; not to smoke | D．it; to not smoke |
—— Have you ever seen a whale alive?
—— Yes, I’ve seen ＿＿＿.
| A．that | B．it | C．such | D．one |
＿＿＿＿four years since I joined the army.
| A．There was | B．There is | C．It was | D．It is |
We had to be patient because it＿＿＿some time ＿＿＿we got the full results.
| A．has been ； since | B．had been ； until |
| C．was； after | D．would be ； before |
He lived in poverty, and he couldn’t help ＿＿＿.
| A．so | B．such | C．it | D．that |
I took ＿＿＿for granted that he would believe in us.
| A．that | B．the thing | C．it | D．this |