He is ________ experienced teacher in our school.
| A．a | B．an | C．the | D．/ |
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 |
Thank you so much! But for your text message, I ___________ home without my ID card this morning.
| A．would have left | B．would leave | C．had left | D．left |