If we go on using energy so wastefully , are that our oil wells will be dried up before new energy sources can be found to replace oil .
| A．chances | B．difficulties | C．questions | D．problems |
_____ is commonly believed that the play was written by Shakespeare.
| A．It | B．That | C．What | D．As |
I will buy this type of car _____ the price is brought down to under 10,000 dollars.
| A．even if | B．provided that | C．unless | D．whether |
. Her interesting face, with a long nose and big eyes, is what makes her _____.
| A．stand by | B．stand for | C．stand up | D．stand out |
_____ it will do us harm or good remains to be seen.
| A．If | B．Whether | C．That | D．What |
. Since everybody is clear, there is no _____ in discussing the question any further.
| A．point | B．possibility | C．wonder | D．doubt |