题文
Only those who have experienced hardship ______ well aware of what happiness means.
| A．can they be | B．they can be |
| C．can be | D．they can |
推荐试卷
Only those who have experienced hardship ______ well aware of what happiness means.
| A．can they be | B．they can be |
| C．can be | D．they can |
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