问题
                    
______sleep do you think is necessary for a Grade 9 student — 8 hours at least.
                            A:How often
B:How long
C:How many
D:How much ;
                        
                        B:How long
C:How many
D:How much ;
正确答案是:
                         
                        
                        
                    同类题型
                    In my view, London’s not as expensive in price as Tokyo but Tokyo is ______in traffic.
________— is it—In the evening on Saturday.
Anny, don’t forget to_ _____the lights when you leave a room.—OK. Mum.
When he didn’t know how to get out of the building, a boy________him_______. [ ]
It is a good habit to go to ______ bed early and getup early.