-Was it 11 o’clock ________ your father came back last night？ -Yes, he is always coming back so late.

Can the woman arrive at the airport before 11’o clock A: He wants to invite the woman to the party. B: He invites more people to the party. C: A better party needs more people to participate.

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He ____ to play ____ before he was 11 years old.

- The light in the professor's lab was still on at 11:00 o'clock. Do you know _____ ?- Maybe at midnight again. A: how long has he worked B: why does he stay up so late C: if he is busy studying D: when he stopped working

He ___________ to play the piano before he was 11 years old.

在所有元素的原子中,电离能、电子亲合能、电负性最大的分别为( ) A: He、O B: He、Cl、F C: He、Cl、O D: He、O、F

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He said that he _______ since two o’clock that morning.

The sentences that follow the stress pattern “o O o o o O o o o ” are ( ). A: I took it to a watch repairer B: He didn't want to talk about it C: Let's open the other one D: He didn't think it interesting