Mĩ chính thức tham gia Chiến tranh thế giới thứ nhất bằng việc làm nào?
A. Kí Hiệp ước liên minh với Đức.
B. Tuyên chiến với Pháp.
C. Tuyên chiến với Đức. 
D. Tuyên chiến với Anh.

Find a mistake in the four underlined parts of the sentence and correct it:
Much as though I approve of his enthusiasm, I’m worried he’ll overdo his weight training.
A. Much as
B. approve of
C. worried
D. overdo

Find a mistake in the four underlined parts of the sentence and correct it:
A species that faces overexploitation is one that may become severely endangered or even extinct due to the rate in that the species is being used.
A. faces
B. overexploitation
C. due to
D. that

Find a mistake in the four underlined parts of the sentence and correct it:
The ancient ruins may be discovered as early as 1792. The historical record is difficult to
interpret.
A. ancient
B. may be
C. as early
D. historical

Find a mistake in the four underlined parts of the sentence and correct it:
The boys were hiding between the bushes in the garden.
A. The
B. were
C. between
D. in the

Find a mistake in the four underlined parts of the sentence and correct it:
We would visit you had we known you were in hospital.
A. would visit
B. had
C. known
D. were

Find a mistake in the four underlined parts of the sentence and correct it:
Alike football, a water polo game begins with the ball in the centre of the pool.
A. Alike
B. game
C. with
D. in the centre

Find a mistake in the four underlined parts of the sentence and correct it:
What I told Tom was a secret. He shouldn’t have been repeated it to you.
A. told
B. was
C. been repeated
D. to you

Find a mistake in the four underlined parts of the sentence and correct it:
Higher general education is based on theoretical expertise and might be contrasted with higher vocational
education, which concentrating on both practice and theory.
A. is based on
B. expertise
C. contrasted with
D. concentrating

Find a mistake in the four underlined parts of the sentence and correct it:
I enjoyed talking to the people with that I met at the party last night.
A. talking
B. the
C. with that
D. at the party