We must apply what we have learned to our daily work because in no case _____ from practice.
| A．should theory separate | B．should theory be separated |
| C．theory should separate | D．theory should be separated |
Nearly a century later，extensive observations that elephants indeed rememberinjuries and hold hates against their abusers．
| A．confirmed | B．have confirmed |
| C．will confirm | D．had confirmed |
…I wonder if I could use your cellphone．
… _．It is on the desk next to you．
| A．No way | B．That's right |
| C．It’s a pleasure | D．Be my guest |
As we all know, it was _________ that resulted in the terrible car accident.
| A．because of her carelessness |
| B．because she was careless |
| C．her being careless |
| D．she was so careless |
Don’t answer the phone when the cell phone is being charged, for it ________ be very dangerous sometimes.
| A．shall | B．should |
| C．can | D．must |
Whatever happens ,Ben, ________ drugs.
| A．doesn’t take | B．not take |
| C．not taking | D．don’t take |