Legend has ______ that CaoCao, King of Wei kingdom in the Three Kingdoms period, built 72 tombs to confuse tomb diggers.
| A．it | B．this | C．them | D．itself |
Scientists have found it seems _______animals and humans are much alike than we thought.
| A．as though | B．even though | C．only if | D．even if |
Parents should see to it _______ their children form the habit of brushing their teeth every day.
| A．this | B．that | C．whether | D．if |
The computer system _______suddenly while he was searching for information on the Internet.
| A．broke out | B．broke up | C．broke in | D．broke down |
Whatfun it is to walk alone withfull moon hanging in the sky.
| A．/; a | B．a; / | C．the; / | D．a ;the |
I insisted __________ to see a doctor, but he insisted nothing __________ wrong with him.
| A．on him to go; should be | B．he went; be |
| C．he go; was | D．he should go; is |