----This returned Chinese scholar has become one of the top experts in this field.
----Yes,I know him very well.He____in Africa with animals for eight years.
| A．has worke | B．had worked | C．worked | D．has been working |
I walked too much yesterday and _____ are still aching now.
| A．my leg's muscles | B．my muscles to leg |
| C．my leg muscles | D．my muscles of the leg |
Tom has three _____.
| A．brothers-in-law | B．brothers-in-laws |
| C．brother-in-law | D．brothers-in-laws |
My sister had beautiful black long _____ but I could see some white _____.
| A．hairs, hair | B．hair, hairs | C．hairs, hairs | D．hair, hair |
The sperm whale can dive up to _____ of 1000 meters.
| A．the depth | B．a depth | C．depth | D．deep |
The children are playing in the _____ of the beach.
| A．sand | B．sands | C．sandes | D．sandy |