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．opportunities | C．questions | D．problems |
It was an exciting moment for these fans this year, _____ for the first time in years they saw their favorite singers.
| A．that | B．which | C．when | D．while |
He likes to sleep with the window ________ and the door ________ at night.
| A．opened, closed | B．open, close | C．opened, close | D．open, closed |
I think this is the best use that we can _________ the material(材料).
A make of B. do of C. take of D. make at
Little Johnny felt the bag, curious to know what it _________.
| A．collected | B．contained | C．included | D．saved |
He had ever climbed this mountain several months before, but ________ he couldn’t find the way this time.
| A．anyhow | B．somehow | C．somewhat | D．sometime |