用括号中所给单词的适当形式填空。

小题1:Peter is a kind and ____________ (help) boy, and we all like him.

小题2:Excuse me, can I give me two ____________ (knife).

小题3:Daniel’s birthday is on the____________ (nine) of March.

小题4:Thanks for ____________ (invite) me to the party.

小题5:Look, there are so many ____________ (policeman) over there.

小题6:It’s ____________ (luck) to live in a community like that.

小题7:Do you want to do some ____________ (shop) with me this afternoon?

小题8:He will ask someone ____________ (fix) your bicycle. It doesn’t work.

小题9:My flat is on the ____________ (twelve) floor in that tall building.

小题10:This is my ____________(three) day in Russia.

碱管堵塞的处理方法为（）。

A、蒸发二段停车，然后用蒸气吹通碱管

B、调小碱泵冲程

C、不停车，切出碱泵吹通碱管

D、调大碱泵冲程