【2015·陕西】The little pupil took his grandma the arm and walked her across the street.
| A．on | B．by | C．in | D．at |
—What do you think about the new teacher?
—________ the new teacher is an elegant lady, she can be extremely difficult to work with.
| A．As if | B．As long as | C．Because | D．While |
Nowadays, many people walk to work ________ Copenhagen Conference calling for living a low-carbon lifestyle to deal with global warming.
| A．in relation to | B．in response to | C．in addition to | D．in opposition to |
—I didn’t take notes at yesterday’s meeting because I had left my pen at home.
—You ________ mine. I ______ it.
| A．must have borrowed; wasn’t using | B．may have borrowed; wasn’t using |
| C．should have borrowed; hadn’t used | D．could have borrowed; wasn’t using |
We’ve been told the good news, but when and where to go for the exciting paid vacation _______ yet.
| A．are not discussed | B．have not been discussed |
| C．is not being discussed | D．has not been discussed |
The police at Denver International Airport examined a bomb threat against a United Airlines flight to San Francisco,____________ the flight for hours.
| A．delayed | B．to delay | C．delaying | D．had delayed |