Use your head! Nothing taught by others can have the same effect on you as ________learned by yourself．

Sometimes he found _______very hard to fall asleep at night, so he went to see the doctor．

 It's an either-or situation - we can Buy a new car this year or we can go on holiday But we can’t do     .

——　Was that the new comer who walked by? ——　＿＿＿＿＿. 

-- Who is dancing to music in the next room?-- ________ the children.