Mr Jiang _______ the company to develop the 5G network for years. Now he works as the chief engineer in it.

A.joined B.was a member of

C.has joined D.has been a member of

— Hello! This is Kevin speaking. May I speak to Mr. Cao?

— Please _________. I’ll put you through.

A.come on B.move on C.hold on D.try on

— A robot served us dinner last night. Don’t you think we are living in amazing times?

— I can’t agree more. The ________ makes our lives easier and happier.

A.information B.technology C.discovery D.competition

They offered courses_________ students know the importance of protecting the Huanghe River.

A.help B.helped C.helps D.to help

Compared with a 1-day weekend, a 2-day weekend is _______ as we may have enough time for our hobbies.

A.more pleasant B.less pleasant

C.the most pleasant D.the least pleasant

As soon as books ________, the volunteers posted them to the students in Hope Primary School.

A.are raised B.were raised C.raised D.have raised

The children are jumping excitedly because they have _______ the design perfectly in groups.

A.completed B.controlled C.contacted D.caused

Max got lost and was trapped in the forest for 10 hours _______ a farmer nearby found him.

A.if B.since C.until D.after

—Wow, eighteen pink roses! For whom?

—________ are for my mum, and the other nine are for my grandma.

A.Few B.Half C.Many D.Most

David is crazy about Chinese history. He _______ visits the museums first wherever he travels in China.

A.never B.seldom C.sometimes D.always