E12- ĐỀ DỰ ÁN CÂU 1.2

That sort of extreme diet is not ______ over a long period. A. sustainably B. sustainability C. sustainable D. sustain

These plants are particularly ______ for brightening up shady areas. A. useful B. usefully C. use D. usefulness

The students are supposed to describe the ______ that they find most useful for learning English. A. apply B. application C. applicable D. applicably

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