题文
The problem is ________ sometimes when we are given something on a constant basis, we start to take them for granted and forget being thankful for what we already have.
| A．that | B．how |
| C．where | D．which |
推荐试卷
The problem is ________ sometimes when we are given something on a constant basis, we start to take them for granted and forget being thankful for what we already have.
| A．that | B．how |
| C．where | D．which |
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