19.Vitamin D helps our bodies make a special chemical, and this special chemical,________,affects our brains, making us feel happy.
A.in turn | B.in particular | C.in advance | D.in![]() |
The professor has ______ 11-year-old boy who has______ gift for dancing.
A.a; a | B.an; the | C.an; a | D.the; 不填 |
That dog ought to be destroyed it attacks any more children.
A.until | B.since | C.after | D.before |
So tired of corn-bread that he eats it with tears in his eyes.
A.is he | B.he is | C.he was | D.was he |
—I want to tell you something.
—You what? I can't hear you're saying.
A.why | B.what | C.that | D.where |
—Have you ever been to Australia?
—No. I’d like to, .
A.even | B.though | C.too | D.meanwhile |