The tomato juice left brown ____ on the front f my jacket．
| A．spots | B．points | C．tracks | D．traces |
相关试题
They appeared me, so I had to explain to them.
| A．misunderstanding | B．misunderstood |
| C．to be misunderstood | D．to have misunderstood |
If China’s space technology has achieved breakthrough in this field, it really is
amazing wonder.
| A．the; an | B．a; an | C．不填; the | D．a; 不填 |
Though he is in his late sixties, the well-known biolo
gist begins each day ____ a sense of adventure and a sense of curiosity.
| A．in | B．with | C．of | D．at |
The chairman was about to declare the conference open ____ the lights went all out.
| A．as | B．while | C．then | D．when |
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