In 1831, Faraday discovered that electricity moves through a wire ________ a magnet（磁铁） is moved near the wire.
| A．where | B．so | C．when | D．but |
We should discuss the plan _____ before we work it out.
| A．in general | B．in detail | C．on time | D．on purpose |
Mom used only half of the money, the rest of which ______ saved for other purposes.
| A．is | B．are | C．was | D．were |
As he reached _____ back door, Jack saw _____ strange sight.
| A．the ; / | B．a; the | C．/; a | D．the ; a |
Between the two parts of the concert is an interval, ______ the audience can buy ice-cream.
| A．when | B．where | C．that | D．which |
––Linda didn’t invite us to the party.
–– ______? I don’t care.
| A．For what | B．So what | C．What’s on | D．What’s up |