Her _______ smile suggested that she was very _______with the answer.

I really enjoyed your lecture, ______ there were some parts I didn’t quite understand.

Having pictures to color will keep children ______ for hours

The old man should follow the doctor’s recommendation that hein bed.[ ]

5 marks the 50th anniversary of the “learning from Lei Feng Day”, a day_____ in honor of the Chinese soldier Lei Feng.