The children _____lost in the woods; otherwise, they would have been at the lakeside camp as scheduled. 

— Who’s that man in our classroom? It ________ be Mr. Brown. He is much taller.— You mean the man in white? He is an exchange student from England.

 —Must the government of Philippines (菲律宾政府) say sorry to China？—Yes, they __________. Their behaviour has deeply hurt Chinese people.

My mother is a great cook and we ________ never get enough of her cookies.

It was dark when Mary went out. I wonder how she ______ through the black lane by herself.