用所给词的适当形式填空。
【小题1】The teacher can answer the questions __________ (easy).
【小题2】Wei Hua ________ (meet) Yang Ling on River Road this morning.
【小题3】Some _________ (child) run or play on the road.
【小题4】Let’s finish ________ (they) quickly.
【小题5】What must Liu Tao _________ (do) in the library?
【小题6】We should keep _________ (health).
【小题7】You must stay _________ (safe) on the road and cross it _________ (safe).
【小题8】You mustn’t run ___________ (quick) on the road.
【小题9】The bus is _________ (stop) on the road.

Jack often smiles . （ ）

A．lot

B．a lot

C．a lot of

Did you go ______ in winter? (   )

A．anywhere

B．somewhere

C．any

It’s _____ thin. ( )

A．and

B．so

Let’s go to the hospital _______.  (　　)

A．one

B．the first

C．first