Mr. Smith, who often helped passers-by repair their bikes, said that what he did was not paid but _______.
| A．relevant | B．optional | C．suitable | D．voluntary |
相关试题
I’ll finish the job ____ I come across great difficulty.
| A．so that | B．even though | C．no matter | D．as though |
——So you missed the meeting.
——____. I got there five minutes before it finished.
| A．Not at all | B．Not exactly | C．Not especially | D．Not really |
They prefer to spend time _____ rather than _____ in the street.
| A．read, wander | B．reading, wandering |
| C．read, wandering | D．reading, wander |
It was _______ the exam results were known _______ a lot of time on computer games.
| A．not until; did the boy begin to regret having wasted |
B．until; that the boy began  to regret to have wasted |
| C．not until; that the boy began to regret wasting |
| D．until; did the boy begin to regret to waste |
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