29.What has been studied suggest that a short nap in the afternoon_______you refreshed for the next four or five hours.
—Which one of these do you want? —________. Either will do. A.I don’t mind B.I’m sure C.No problem B. Go ahead
Scientists study ________ human brains work to make computers.
________ can be good at something for 40 years if he doesn’t love it.
Mrs Smith finds it hard to clear up the mess, as her children are always ________ whenever she tries to.
I have an appointment ________ Dr Smith, but I need to change it.