No one can tell ________ on earth that created so colorful and amazing a world full of vitality．

A．how is it

B．how it is

C．what is it

D．what it is

Only when he was asked to see the boss ________ that he had made a serious mistake in his business decision．

A．realized David

B．David realized

C．did David realize

D．David did realize

________ English at an early age, the boy can speak it quite fluently now as a primary school student．

A．Taught

B．Having taught

C．Teaching

D．Being taught

In ________, most people in ________ were not able to resist the temptation of make economy．

A．1990s; their twenties

B．1990s; the twenties

C．the 1990s; their twenties

D．the 1990s; the twenties

People of all races should hold such a common belief that one's value lies in what he/she can give ________ what he/she can get．

A．except for

B．rather than

C．in case

D．even though

My grandmother ________ roses all her life：whenever I see flowers, I'll always think of her．

A．has been growing

B．grows

C．is growing

D．would grow

－My main consideration is ________the growth of tourism actually helps people．

－That's not a problem．

A．whether

B．if

C．why

D．how

I ________ you're wondering why I asked you all to come here today．Well, let me explain．

A．expect

B．have expected

C．am expecting

D．was expecting

－Did you get the prize for the high jump?

－Yes, even I myself didn't believe I could make ________．

A．that

B．it

C．myself

D．them

Anyone who knows about the world-famous scientist Steven Hawking can see that within his small and weak figure, he ________ a big heart．

A．is carrying

B．has carried

C．was carrying

D．carries