This kind of medicine has a bad ________on our brains.
| A．affection | B．affect | C．effect | D．result |
I took ＿＿＿for granted that he would believe in us.
| A．that | B．the thing | C．it | D．this |
＿＿＿used to be thought that the earth was square.
| A．He | B．What | C．It | D．That |
Does＿＿＿matter whether he can finish the job on time?
| A．this | B．that | C．he | D．it |
Tom’s mother kept telling him that he should work harder, but ＿＿＿didn’t help.
| A．he | B．which | C．she | D．it |
In fact, ＿＿＿is a hard job for the police to keep order in an important football match.
| A．this | B．that | C．there | D．it |