1 . He is ________ excellent scientist in the world, who is ________ honour to his hometown.

A．a, a

B．an, an

C．a, /

D．the, the

2 . —It is terrible that I made ________ mistake. But I won’t make the same one for ________ second time.
—Never mind. Nobody is perfect.

A．a; a

B．a; the

C．the; the

D．a; /

3 . If you have _______ chance of studying abroad to research about the local customs and culture, I think living with a host family will be _______ smart choice.

A．a; a

B．the; the

C．the; a

D．a; the

4 . —America had another 160,000 new COVID-19 cases yesterday.
—But ________ news is not ________shock to many Americans, they’re used to it.

A．the; a

B．the; the

C．a; a

D．a; the

5 . — GPS is ________ useful invention.
—Of course. It shows that there is ________ underground parking lot under the Moon Park.

A．/; an

B．a; an

C．an; an

D．an; a

6 . Jinan city will hold the 11th National Games. We are facing ________ good opportunity, ________ that will lead to our prosperity.

A．a; one

B．a; it

C．the; one

D．the; it

7 . 单句改错
1. So many thousands of terrified people died every time when there was an outbreak.
2. Either you or the headmaster are to hand out the prizes to those gifted students.
3. Mother put up a big picnic lunch, because she foresee how hungry we would be.
4. I could make no senses of his carelessly written letter.
5. What can we do to help them to break out from the difficult position?
6. In the last years of the Qing dynasty, the Yihetuan had a influence on people in north China.
7. It is such delight to have friends coming from afar.
8. When I came in, I found a strange girl seating in the corner.
9. He was disappointed to find his suggestions turn down.
10. Amie Salmon, disabled, is attended throughout her school days by a nurse pointing to guard her.

8 . She was admired by all her friends because the famous university offered her ________ extra chance after ________ last week’s interview.

A．/, the

B．an, the

C．an, /

D．the , /

9 . I am going to have _________ picnic on _________ Sunday.

A．the;an

B．an;the

C．a;不填

D．an;不填

10 . We must try to reach ________ agreement if we don't want to lose ________ face.

A．the; a

B．/; the

C．an; /

D．an; the