―Why? Where is the key to the sound lab?
―Dear me! You _______ it in the taxi！
| A．have never left | B．never left |
| C．haven’t left | D．didn’t leave |
Every day ____ a proverb aloud several times until you have it memorized.
| A．read | B．reading | C．to read | D．reads |
In much of the animal world, night is the time ____ for sleep —pure and simple.
| A．set aside | B．set down | C．set off | D．set up |
Laura was away in Paris for over a week . When she got home，there was a pile of mail_____for her.
| A．waited | B．waiting | C．to wait | D．was waiting |
—What major will you choose when you are at university?
—______ but Physics, which has brought terrible dreams to me for the past 12 years.
| A．Nothing | B．Anything | C．Something | D．Everything |
It is said that the engines of Flight MH370____while flying over the Indian Ocean,with all on board killed .
| A．broke out | B．ran out | C．gave out | D．wore out |