问题

Only when the European countries’ financialsystem broke down_____ to take measures to deal with those problems.

A:did they decide
B:they decided
C:they had decided
D:had they decided

正确答案是：

同类题型

Yesterday Jim spent 7 hours in playing computer games; he even didn’t do his homework.—Don’t scold him___, he is a child.[ ]

I know you have eaten all sorts of junk food your mother and I probably _____ you have.

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I’m cooking breakfast for my ________ mother. She’s ________ in hospital now.

–Is Lily your good friend–_________ We are only nodding acquaintances