【推荐1】—Which invention do you think is ________ most helpful.          
—The mobile phone. It makes it easier for people to communicate.

A．a

B．the

C．an

【推荐2】—Does Jane have ______ fever?
— Yes, she does. I think she should go to ______ hospital.

A．a; the

B．an; /

C．the; an

【推荐3】—Have you ever worked as _________ volunteer during the COVID-19 pandemic?
—Yes, it was ________ unforgettable experience for me.

A．a; an

B．an; the

C．a; the

D．the; a

【推荐1】The film My People,My Country is such       big success that many people watch it.

A．a

B．an

C．the

【推荐2】—President Xi Jinping paid ________ important visit to the US in 2017.
—And he was warmly welcomed by Donald Trump, ________ 45th American president.

A．a, the

B．an, a

C．the, a

D．an, the

【推荐3】If you read the article for a second time, you will have ________ better understanding of it.

A．the

B．a

C．an

D．/

【推荐1】—Is London               capital city of the UK?   
—Yes, it is.

A．a

B．an

C．/

D．the

【推荐2】Today many tools are made of ________ plastic. ________ plastic tools are very useful.

A．a; The

B．\; A

C．the; An

D．\; \

【推荐3】Smoking, which may be ________ pleasure for some people, is ________ serious source of discomfort for others.

A．a; ／

B．a; a

C．／; a

D．a; the

【推荐1】— There will be ________ 8-day art show in Chengyang next month. We can enjoy great works like Mono Lisa Smile by Da Vinci.
— Wow! It must be ________ most unusual show.

A．a; the

B．a; an

C．an; a

D．an; the

【推荐2】This is _____ “J” and that’s _____ “F”.

A．a; an

B．an; a

C．a; a

D．an;an

【推荐3】There is ________ “u” and   ________ “e” in the word “ruler”.

A．an; an

B．a; an

C．a; a