单项选择题

I was exhausted when I reached home, and I flung myself down on the front steps to （）.

A. discover
B. recover
C. dissolve
D. retreat

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单项选择题

A.flocked
B.swarmed
C.packed
D.crowded

单项选择题

A.related
B.contributed
C.owed
D.attached

单项选择题

German, spoken by just over 100 million people, is one of the world’s ten-largest languages （）population.

A.inplaceof
B.bymeansof
C.intermsof
D.bywayof