Answer :
The question is related to the use of the photoshop application is used to create replica pictures which are very synonymous with actual real world objects. The shift key or the CTRL key are used to scale proportionately or skew the object respectively.
The box surrounding a typed text may be tweaked in other to enlarge or reduce the box size. With the shift key, the text in the box is adjusted proportionately such that it fits in well with the box with the text centred in the middle.
However, with the CTRL key, the text is either skewed to the right or left of the text box, as the text is either shifted more to the right or left.
Therefore, the missing phrases are shift and ctrl respectively.
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