Bikes ______ in the 1880s and they ______ traveling around.
| A．were invented; were used as |
| B．were invented; are used for |
| C．was invented; was used for |
| D．invented; are used to |
— I have great _______in finishing the work by myself. Could you help me?
— No problem.
| A．fun | B．success |
| C．advice | D．difficulty |
-How well she sings!
-Yes, she has a very sweet __________.
| A．voice | B．Sound |
| C．Noise | D．shout |
He found very difficultthe math problem.
| A．that；to solve | B．this；solving |
| C．it；to solve | D．it；solving |
My sister has learnt English _________.
| A．for twelve years ago | B．since she was four |
| C．twelve years ago | D．at the age of four |
—Did Tom’s parents go to the meeting yesterday?
—Yes,of them did, butspoke.
| A．each, none | B．both, none |
| C．neither, both | D．both, neither |