Scientists have announced a major ____________ in their search for a vaccine against the most deadly strain of pandemic flu.
A.upsurge
B.outlay
C.breakout
D.breakthrough

IV. Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.
(A) Although her friends (B) tried to persuade her (C) to apply for the job at a local factory, (D) but Christine refused to make an application.
A.Although
B.tried to persuade
C.to apply
D.but

Task 2. Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.
(A) If you had (B) studied hard, you (C) wouldn't failed (D) the exam.
A.If you
B.studied hard
C.wouldn't failed
D.the

Task 2. Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.
If I (A) hadn't been too (B) late for the exam, I might (C) be allowed (D) to enter the examination room.
A.hadn't been
B.late for
C.be allowed
D.to enter

Task 2. Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.
We (A) might have (B) gone to the Science Fair if we (C) knew (D) about it.
A.might
B.gone to
C.knew
D.about it

I. Mark the letter A, B, C, or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A.tedious
B.secure
C.extremely
D.rewarding

The orang-utan ____________ an ape but is smaller in size.
A.relates
B.Familiarizes
C.recognizes
D.resembles

I. Mark the letter A, B, C, or D to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

A.enthusiastic
B.smooth
C.southern
D.trustworthy

II. Mark the letter A, B, C, or D to indicate the word that dfffers from the other three in the position of the primary stress in each of the following questions.

A.prospect
B.reference
C.promotion
D.interview

II. Mark the letter A, B, C, or D to indicate the word that dfffers from the other three in the position of the primary stress in each of the following questions.

A.rewarding
B.fascinating
C.tedious
D.challenging