1. I don’t believe that a third of__________ should be paid in tax.
A. the person’s income B. a person ’s income
C. person’s income D. person income
2. The number of loyal customers__________ on the rise thanks to the company’s effective advertising campaign.
A. is B. are C. am D. be
3. I try to go jogging at least four times __________.
A. the week B. of the week C. a week D. of a week
4. People__________ always willing to switch to a better product.
A. is B. Are C. Be D. Am
5. Too much rubbish is being dumped in__________.
A. sea
B. The sea
C. A sea
D. Some sea
giúp vớiii