单句语法填空
1．He came(come) in 1999.He_has_been_(be) a teacher for over 11 years.
2．—What has_happened (happen)?
—I lost (lose) my key and can’t open the door.
3．(2014·天津高考单项填空)We won’t start the work until all the preparations have_been_made_(make)．
4．—Would you like some more food?
—Thank you.I have_had (have) enough.
5．—When did you come?
—I_came(come) the day before yesterday.
