Q417
Over recent years, glue-sniffing, which . . . . . . . . negative effects on both the body and the mind, . . . . . . . . a major problem among teenagers.
A.
has had/is becoming
B.
has/has become
AnswerC.
is going to have/had become
D.
will have/will have become
E.
is having/was becoming
Answer: Option B
Solution
Answer: Option B
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