Keiko has __. A.enjoyed being with other sea animals B.killed other sea animals that have
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The use of blue lights to reduce suicides __. A.has no result yet B.is proved effective C.is welcomed by suicides D.has been refused by stations
请在第_____处填上正确答案。 A.whereas B.however C.whoever D.whenever
Happily for john's mother, he is working harder to __ his lost time. A.make up for B.keep
Time needed for physical activity depends on __. A.health B.effort C.money D.kinds of activities