A. N0 = 50.
B. N0 ≥ 51.
C. N0 = 40.
D. N0 = 45.

Find a mistake in the four underlined parts of the sentence and correct it:
Although she’s charming, but there’s something a little odd about her.
A. she’s
B. but
C. something
D. odd

A. 2.
B. 3.
C. 4.
D. 5.

Find a mistake in the four underlined parts of the sentence and correct it:
Most plants in deserts have adapted to sporadic rainfalls in a desert environments.
A. Most
B. have adapted
C. rainfalls
D. environments

Find a mistake in the four underlined parts of the sentence and correct it:
I would have saved some food for you if I knew you were going to be late.
A. would have saved
B. for you
C. knew
D. to be late

Find a mistake in the four underlined parts of the sentence and correct it:
Although species evolve differently, most of them adapt to a specific habitat or environment that best meets their survive needs.
A. Although
B. adapt
C. that
D. survive

Find a mistake in the four underlined parts of the sentence and correct it:
Our understanding and use of non-verbal cues in facial expressions and gestures are familiar to us nearly in birth.
A. Our understanding
B. in facial expressions
C. are familiar
D. in

Find a mistake in the four underlined parts of the sentence and correct it:
Which players are allowed holding the ball with both hands?
A. are
B. holding
C. with
D. both hands

Find a mistake in the four underlined parts of the sentence and correct it:
The burglar is thought to get in through the bathroom window.
A. burglar
B. to get
C. through
D. bathroom window

Choose one sentence that has the same meaning to the root one:
Jim had a headache, but he still read until late.
A. In spite of having a headache, Jim still read until late.
B. Because of his headache, Jim still read until late.
C. In case Jim has a headache, he still read until late. 
D. Despite of having a headache, Jim still read until late.