A car travels at a rate of 50 miles per hour.How long will it take to travel 300 miles?
| A．250hours | B．6hours | C．1/6hours | D．15000hours |
( ) （8）He helped his mother_______ some rice.
A. cuttingB. to cutC. cuts
( ) （7）____ weekends , she gets up a little later.
A.onB. atC. in
( ) （6）I have stamps ______ China.
A. fromB. forC. at
( ) （5）Bill is good _____ football.
A. atB. inC. for
( ) （4）Bill has many______.
A. hobbyB. hobbiesC. hobbys