你可能感兴趣的试题
σ(i+j)θr (R×S) σ(i+r)θj (R×S) σiθ(r+j) (R×S) σiθj (R×S)
Tom delayed sending Tom’s delaying sending Tom delaying sending Tom delayed to send
Tom’s being Because Tom was Tom was Tom being
Tom delayed sending Tom’s delaying sending Tom delaying to send Tom delayed to send
Tom having been late again Tom to be late again Tom's being late again Tom was late again
who is he what he is what’s he who he is
For Tom to win the first prize Tom’s winning the first prize Tom won the first prize Because Tom won the first prize
what’s the matter with Tom
what the matter with Tom is
w
Tom delayed sending Tom’s delaying sending Tom delaying to send Tom delayed to send
Tom delayed sending Tom’s delaying sending Tom delaying sending Tom delayed to send
what’s the matter with Tom what the matter with Tom is w
What’s; fish How’s; fish What's; fishes Where’s; fishes
Tom delayed sending Tom’s delaying sending Tom delaying to send Tom delayed to send
Tom delayed sending Tom’s delaying sending Tom delaying to send Tom delayed to send
Tom having been late again Tom to be late again Tom’s being late again Tom was late again
Tom having been late again Tom to be late again Tom’s being late again Tom was late again