Question

An anti-viral drug that (a) ____ widely used to treat Hepatitis B (b) _____ become a major curse for some people infected with HIV who have become resistant to the drug. A new study (c) ______ suggested that this could (d) ______major implications for over four million people

Answer 1

Answer:

(a) is

(b) has

(c) has

(d) do

.

.

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Answer 2

Answer:

(a) was

(b) had

(c) had

(d) have

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