—Can I help you,sir?
—Yes,I bought this radio here yesterday,but it_________.
| A．didn’t work | B．won’t work |
| C．can’t work | D．doesn’t work |
The problem lies_______ we are now giving him a fish, not teaching him to fish.
| A．in that | B．in which | C．on which | D．at which |
When ____ comes to saving energy, big changes start with small steps, like turning off the lights.
| A．that | B．this | C．it | D．one |
Of the two cameras, I would prefer ________ one, which is very easy for me to carry.
| A．a smaller | B．the smallest | C．a small | D．the smaller |
Mr Jones, a new teacher, stood in front of the students, his body ________ with fear.
| A．trembling | B．trembled | C．was trembling | D．was trembled |
.—Can you give some advice on what I said just now?
—Sorry. My mind______.
| A．is wandering | B．was wandering | C．has wandered | D．had wandered |