________ you’re invited to speak, you should remain silent at the meeting.
A.Because B.After C.If D.Unless
________ wonderful news programme we are watching!
A.What B.How C.What a D.How a
— I think the man over there must be Douglas.
— It ________ be him. He has ________ to Australia.
A.can’t, gone B.can’t, been C.may not, been D.mustn’t, gone
We believe that the new Silk Road will provide more countries with a good _______ to know about China.
A.purpose B.chance C.memory D.level
Life is not _________ journey which is full of ups and downs, so never lose heart.
A.hard B.a hard C.smooth D.a smooth
Alice is always full of ideas, but ____________ is useful to my knowledge.
A.none B.nothing C.no one D.neither
