I really enjoyed your speech, ______ there were some parts I didn’t quite understand.
--Can you help me to _____ my dog when I leave for Hong Kong? -- Sure.
She said she had some trouble ___________ her homework.
Our country _______ a lot in the last fifty years.
My mother_______ if she ________her work this week.
There _____ an eraser, two books and three pens on the desk.