I still remember there used to be _______ underground cave. My friends and I often had fun in_______ 18-foot-deep cave.

A. an; the B. a; the C. an; an D. a; an

—Have you got an iPhone X?

---No, many young people now say “No” to it because of _______ follow-up service.

A. it’s B. it C. its D. itself

—Look! Someone _______ the floor. It looks quite clean now.

—I guess Tom did it, for he was on duty today.

A. is sweeping B. was sweeping C. has swept D. swept

A new high-speed railway ________ Yangzhou ________ Nanjing will be built.

A. connected; and B. connects; with C. connected; to D. connecting; to

-I’m new here in Taizhou.-Take a map of Taizhou with you. You’ll find it of great _______ in helping you to get round Taizhou.

A. price B. cost C. interest D. importance

The wonderful video you look forward to _______ well these days.

A. sell B. selling C. sells D. is sold

---How about starting a new company in South America?

---Good idea. I think ____ the general manager ___ the chief engineer have the courage to take on the challenge.

A. neither; nor B. either; or C. both; and D. not only; but also

Children’s Day is coming. Look! ______ little children are practising dancing in _______hot weather carefully for the performance.

A. such , such B. so , such

C. so , so D. such , so

He is bright and hardworking. I’m sure he’ll be successful _______ in the future.

A. some time B. some times C. sometime D. sometimes

—When will the railway that connects the two cities open?

— next year. Only two thirds been built.

A. Until; has B. Until; have

C. Not until; has D. Not until; have