—It shouldn't be so difficult to solve the problem if we all come to help. —That's right_ _.
The organizers promise ________wins the first prize a chance to go abroad。
______ in London, the penniless American wandered on the pavement, ______ to find a job to make a living.
Once ____________ , a plan should be carried out.
Being a parent is not always easy, and being a parent of a child with special needs often carries with _______ extra stress.
Between the two periods of classes is a break, _______ we can have a short rest.