I had great difficulty___________ thesuitable food on the menu in that restaurant.

The 16th Asian Games started ________ November 12 th,2010 in Guangzhou.

When the young man came back, tired, he just forgot to turn on the radio and ________ missedthe program[ ]

You had better book rooms at the hotel in advance you should find no room on your arrival

___ __ have you worked -Since 2 pm.