—Could you tell me ______?—Usually one hour and a half.
--- ____ have you been a member of Greener China? --- For two years.
--- Have you ____ your key? --- No, I’ve ____ for it everywhere, but I can’t find it.
My brother always ____ his lesson, so he is a top student.
The dog is very ___, and it can work out the problem____.
Danny is always very happy when he has something ___.