It may take _________ years to make such robots .
I’m going to take a vacation. Could you please __________me _________some information about interesting places to travel?
__________ good grades, you should try to study harder.
The big bag is too heavy for the little boy ________. Who volunteers to help him?
Bob used to in the countryside .but mow he is used to in the big city
Mary will make a plan as soon as she her homework.