walk is expected to last all day, so bring packed lunch.
| A．A; a | B．The; 不填 | C．The ; a | D．A ; 不填 |
_____________ the ability to speak, so he used sign language to communicate with others.
| A．As he lost | B．He lost | C．Having lost | D．His being lost |
I just choose a simpler life style, ______________ where I can ride my bike all over and do not have to make a great living to survive.
| A．it | B．that | C．the one | D．one |
Shooting, as __________ means of survival originally, developed into _________ sport only in the late 19th century.
| A．a; a | B．the; the | C．a; the | D．the; a |
John has great singing _____________, but to become a real singer, he needs a lot of necessary training and practice.
| A．privilege | B．potential | C．promotion | D．possibility |
In English class, our teacher often creates an environment _____________ we are given the opportunity to solve problems ourselves.
| A．when | B．which | C．where | D．that |