They didn’t know how the change had .
| A．been taken place | B．happen |
| C．come about | D．broke out |
––Why didn’t you come to the party?
––I had meant _____, but something unexpected happened.
| A．so | B．that | C．not | D．to |
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 |