Find a mistake in the four underlined parts of the sentence and correct it:
If you slept under a mosquito net you weren’t bitten so often.
A. slept
B. mosquito net
C. weren’t
D. so often

Find a mistake in the four underlined parts of the sentence and correct it:
In the future smart cars will also be intelligent enough to avoid pedestrians, bicycle riders and others whom are not driving automobiles.
A. also
B. enough
C. bicycle riders
D. whom

Find a mistake in the four underlined parts of the sentence and correct it:
When he was telling them what had happened, they thought he was madder still.
A. was telling
B. had happened
C. thought
D. madder still

Find a mistake in the four underlined parts of the sentence and correct it:
A ball eagle can distinguish from other large birds by its white head and white tail.
A. A ball
B. can distinguish
C. other
D. its

Find a mistake in the four underlined parts of the sentence and correct it:
Trees are designed as neither hardwoods or softwoods.
A. are
B. as
C. neither
D. or

Find a mistake in the four underlined parts of the sentence and correct it:
Disease, pollute, and limited distribution are factors that threaten various plant and animal species.
A. pollute
B. are
C. factors
D. threaten

Find a mistake in the four underlined parts of the sentence and correct it:
He asked me if I had gone out last night or I had been tired.
A. asked
B. had gone
C. last night
D. had been

Find a mistake in the four underlined parts of the sentence and correct it:
I have a problem to memorizing names of people.
A. have
B. problem to
C. memorizing
D. names

Find a mistake in the four underlined parts of the sentence and correct it:
The mountain climbers were warned for the avalanche danger.
A. mountain
B. were
C. for
D. danger

Đến năm 1917, yếu tố nào tác động để Mĩ quyết định đứng về phe Hiệp ước trong Chiến tranh thế giới thứ nhất?
A. Các nước Đức – Áo – Hung đã suy yếu.
B. Phong trào cách mạng ở các nước dâng cao.
C. Có đủ khả năng chi phối Hiệp ước.
D. Phong trào phản đối chiến tranh của nhân dân Mĩ phát triển mạnh.