While he was investigating ways to improve the telescope, Newton made ______ discovery which completely changed _____

While he was investigating ways to improve the telescope, Newton made ______ discovery which completely changed ______ man’s understanding of colour.

#10467

a; 不填

a; the

不填; the

the; a

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People are living in_______ world where mouse clicks rule our life, so online searches have become_______ must.

#8764

the; /

/; a

a; a

a; the

—Have you heard of _______ death of Nelson Mandela? —Yes. It is indeed _______ loss to the world.

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the; a

a; the

the; /

a; /

It is ____comfort for ______patients to be close to their loved ones.

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a; the

/,the

a; /

the, the

    number of visitors came but I don’t know     number．

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A ; the

The ; a

A ; a

The ; the

Valentine's Day is almost here: ________ time of year when some of us enjoy ________ company of a loved one, while others feel lonely being alone.

#7995

the；不填　

a；a

a；the

the；a

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