Doing exercise for_____ hour every day is good for your ____

Doing exercise for_____ hour every day is good for your _____ uncle.

#34271

a, an

an, an

a , /

an , /

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What about _____dictionary on the bookshelf?  ---It’s very useful ,I think.

#33717

the

She said that he got ______useful book..2.

#33862

the

He is______ outstanding boy. He studies in______ universitythat I like very much.

#33954

a; a

an; a

an; an

a; an

I have _____ American friend. He is _______active boy.

#34378

a, an

a, a

an, a

an, an

What do you usually have for________ breakfast?A piece of bread and ______ egg.

#33178

a; an

不填; the

a; the

不填; an