He began to work there in his _______ .
A: fifties
B: fifty
C: fiftieth
D: the fiftieth
A: fifties
B: fifty
C: fiftieth
D: the fiftieth
举一反三
- It’s never too old to learn. Karl Marx began to learn Russian in his ______. A: the fiftieth B: fiftieth C: fifty D: fifties
- He began to work there in _______ . A: his fifty B: his fifties C: age of fifty
- He began to work there . A: on his fifty B: at age of fifty C: when he fifty D: in his fifties
- Tony's mum looks young and beautiful. It's hard to imagine she is already in her _______. A: fifties B: fifty C: fiftieths D: fiftieth
- there is a wire pole along the road _____ meter. A: about fifty B: every fiftieth C: each fifty D: every 50