The school rules state that no child shall be allowed out of the school during the day, accompanied by an adult.
| A． | once | B． | when | C． | if | D． | unless |
. Mary was only too ready to help others, seldom, _____, refusing them when they turned to her.
| A．if never | B．if not | C．if any | D．if ever |
. — ______ was it _______ they discovered the entrance to the underground palace?
— Totally by chance.
| A．What; that | B．How; that | C．What; when | D．How; as |
There is no________ that students will listen attentively in class, if they are _____ The World Cup in South Africa at night
| A．probability ; accustomed to | B．possibility ; addicted to |
| C．need ; drunk with | D．chance ; familiar with |
-----Do you have a minute? I’ve got something to tell you.
-----OK, _________you make it short. You see the match between Argentina and Korea is on and I won’t miss every wonderful moment.
| A．so long as | B．now that | C．if only | D．every time |
I will lose _________ before an examination because of much worry.
| A．heart | B．appetite | C．favor | D．appeal |