Circle a mistake in each sentence below

Giúp e vs
 
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Exercise 6. Circle a mistake in each sentence below

1. Safer a city is, the more livable it becomes.
A. Safer
B. the
C. more livable
D. becomes

2. Our city is age-friendly. We make it easy for the elderly to get along by public transport.
A. age-friendly
B. easy
C. elderly
D. get along

3. The bigger the shopping mall is, the attractive it is to teenagers.
A. bigger
B. is
C. attractive
D. to

4. The closer an area is to the downtown, denser its population is.
A. closer
B. to
C. denser
D. is

5. Hoang is coming up with a fever. The more time that passes, the higher his temperature is.
4