Mike, _________do you have a health examination?
Once a year.( )
A.how longB.how manyC.how muchD.how often
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.informationB.technology
C.discoveryD.competition
They offered courses _________ students know the importance of protecting the Huanghe River.( )
A.helpB.helpedC.helpsD.to help
Compared with a 1﹣day weekend, a 2﹣day weekend is ____ as we may have enough time for our hobbies.( )
A.more pleasantB.less pleasant
C.the most pleasantD.the least pleasant
As soon as books ______, the volunteers posted them to the students in Hope Primary School.( )
A.are raisedB.were raised
C.raisedD.have raised
The children are jumping excitedly because they have _______ the design perfectly in groups.( )
A.completedB.controlledC.contactedD.caused