Naturally, parents are curious to find out why the Internet is so attractive

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Naturally, parents are curious to find out why the Internet is so attractive, and they want to know if it can be (2) __________ for their children. Should parents be worried if their children are spending that much time watching their computers?

harming

harmful

hurting

hurtful

Giải thích

A. harming (v): làm hại

B. harmful (adj): có hại

C. hurting (v): làm tổn thương

D. hurtful (adj): tổn thương

=> Sau động từ “tobe” cần 1 tính từ, xét về nghĩa => chọn B